EBYTE E95-DTU Wireless Module User Manual

: June 5, 2024
: ebyte

EBYTE E95-DTU Wireless Module

EBYTE-E95-DTU-Wireless-Module-

INSTALLATION

Prepare two E95-DTU (400SL22-485)
First install the antenna for the digital DTU, and then install the power supply. The user selects the power adapter for power supply according to the needs.
Use USB to RS-485 or other methods to connect the computer to the digital DTU;
Start two serial port debugging assistants, select the serial port baud rate to be 9600bps (default), and the check method to be 8N1 to make serial port transparent transmission;
If the customer needs to switch the working mode, it can be controlled by the Mode button to switch between differentX working modes (M0 indicator, M1 indicator). Press and hold the Mode button for about 1 S and then release it to switch modes. The mode switching details are shown in the table below:

No.

| ****

Type

| ****

M1

| ****

M0

| ****

Description

---|---|---|---|---

Mode 0

| Transparent Transmission

Mode

| ****

Light Off

| ****

Light Off

| ****

Serial port open, wireless open, transparent transmission (factory default mode), support special command air configuration

Mode 1

| ****

WOR Mode

| Light

Off

| Light

On

| ****

Can be defined as WOR sender and WOR receiver, support air wakeup

Mode 2

| ****

Configuration Mode

| ****

Light On

| ****

Light Off

| The user accesses the register through the serial port to control the working status of the DTU. The user can configure the DTU through

the computer configuration software.

Mode 3

| Deep Sleep

Mode

| Light

On

| Light

On

| ****

DTU goes to sleep mode

Note: The DTU has a power-down save mode function (the factory default setting is transparent transmission mode), the user needs to switch the corresponding mode according to the M1 and M0 indicators (effective immediately).

Parts Description

EBYTE-E95-DTU-Wireless-Module-5

No.	Name	Function	Description
1	Mode	Mode switch button	Working mode switching control
2	ANT	RF interface	SMA-K，External thread inner hole
3	DC	Power supply	DC power input port, pressure line port
4	RS485	RS485 interface	Standard RS-485 interface
5	PWR	Power indicator	Lights up when the power is on
6	TXD	Sending indicator	Flashes when sending data
7	RXD	Receiving indicator	Flashes when receiving data
8	MO	Mode indicator	Working mode indicator
9	M1	Mode indicator	Working mode indicator

Size

Interface Description

Power interface description

E95-DTU can be powered by 8～28V DC power supply, it is recommended to use 12V or 24V DC power supply. The wiring port adopts wiring terminal (2 Pin) connection.

Communication interface description
E95-DTU can use 3.81 terminal block to connect with equipment through RS-485.

No.

| Standard

definition

|

Function

|

Description

---|---|---|---
1| G| signal ground| Anti-interference, grounding
2| A| RS-485 bus A interface| RS-485 A interface is connected to device A interface
3| B| RS-485 bus B interface| RS-485 B interface is connected to device B interface

Note: The communication is not smooth when connecting the DTU to multiple devices, but there is no such phenomenon in a single device. Please try to connect a 120Ω resistor in parallel between the 485_A terminal and the 485_B terminal.

Technical Index

Model specification

Model

| Working

Frequency

|

Distance

|

Specifications

|

Recommended Application Scenarios

---|---|---|---|---
Hz| km

E95-DTU(400SL22-485)

|

433MHz

|

5

|

LoRa Spread spectrum

anti-interference

| Suitable for environments with long distances and susceptible

to interference

Note: Sunny, open environment without obstruction, 12V/1A power supply, 5dBi suction antenna, antenna height 2 meters from the ground, use factory default parameters.

General specifications

No.	Term	Specification	Description
1	Size	926730 mm	Review installation dimensions for details
2	Weight	95 g	Weight tolerance 5g

3

| Working

Temperature

|

-40℃～+85℃

|

Meet the needs of industrial use

Frequency range and channel number

Model

| Default

Frequency

|

Frequency Range

| Channel

Spacing

|

Number of Channels

---|---|---|---|---
Hz| Hz| Hz
E95-DTU(400SL22-485)| 433MHz| 433MHz| 1M| 1，Half Duplex

Note: In the same area, multiple groups of digital DTUs are used for one- to-one communication at the same time. It is recommended that each group of digital DTUs set the channel spacing above 2MHz.

Air speed class

Model

| Default Air

Rate

|

Level

|

Air Speed Class

---|---|---|---
bps| bps
E95-DTU(400SL22-485)| 2.4k| 8| 0.3、1.2、2.4、4.8、9.6、19.2、38.4、62.5k

Note: The higher the air speed setting, the faster the transmission rate and the shorter the transmission distance; therefore, when the speed meets the requirements of use, it is recommended that the airspeed be as low as possible.

Current parameter

Model

| Transmitting Current mA| Waiting Current mA
---|---|---
12V| 24V| 12V| 24V
E95-DTU(400SL22-485)| 45| 26| 10| 7

Note: It is recommended to reserve more than 50% of the current margin when selecting the power supply, which is conducive to the long-term stable operation of the DTU.

Sending and receiving length and data separate method

Model	Cache Size	Data Separate Method

E95-DTU(400SL22-485)

|

1000 Bytes

| Data can be separated sent with 32/64/128/240 bytes by

command

Note:

If the DTU’s single received data is greater than the single packet capacity, the excess data will be automatically allocated to the second transmission until the transmission is completed;
The single received data of the DTU cannot be larger than the buffer capacity.

Function Details

Fixed-point transmission (hexadecimal)

Broadcast transmission (hexadecimal)

Broadcast address

Example: Set the address of DTU A to 0xFFFF and the channel to 0x04.
When DTU A is used as a transmitter (same mode, transparent transmission mode), all receiving DTU under the 0x04 channel can receive data to achieve the purpose of broadcasting.

Listening address

Example: Set the address of DTU A to 0xFFFF and the channel to 0x04.
When DTU A is receiving, it can receive all the data under channel 0x04 to achieve the purpose of monitoring.

Operating mode

E95-DTU has four working modes. When there is no demanding low power consumption requirement, it is recommended to configure the DTU to transparent transmission mode (mode 0) if normal communication is required;
The default setting of the DTU at the factory is transparent transmission mode (mode 0).

No.

|

Type

|

M1

|

M0

|

Description

---|---|---|---|---

Mode 0

| Transparent transmission

mode

|

Light Off

|

Light Off

| Serial port open, wireless open, transparent transmission (factory default mode), support special command air

configuration.

Mode 1

|

WOR Mode

| Light

Off

| Light

On

| Can be defined as WOR sender and WOR receiver, support air

wakeup

Mode 2

|

Configuration Mode

|

Light On

|

Light Off

| The user accesses the register through the serial port to control the working status of the DTU. The user can configure the DTU

through the upper computer configuration software.

Mode 3

| Deep Sleep

Mode

| Light

On

| Light

On

|

DTU goes to sleep mode.

Transparent transmission mode (mode 0)

Type

|

When the M0 indicator light is off and the M1 indicator light is off, the DTU is working in mode 0

---|---

Sending

|

Users can input data through the serial port, and the DTU will start wireless transmission.

Receiving

| The DTU receiving function is turned on, and after receiving the wireless data, it will be output through the serial port TXD pin.

WOR mode (mode 1)

Type

|

When the M0 indicator light is on and the M1 indicator light is off, the DTU is working in mode 1

---|---

Sending

| When defined as the transmitter, the wake-up code for a certain period of time will be automatically added before transmission

Receiving

|

Data can be received normally, and the receiving function is equivalent to mode 0

Configuration mode (mode 2)

Type

|

When the M0 indicator light is off and the M1 indicator light is on, the DTU is working in mode 2

---|---

Sending

|

Can be configured wirelessly

Receiving

|

Can be configured wirelessly

Configurating

|

The user can access the register to configure the working status of the radio

Deep sleep mode (mode 3)

Type| When the M0 indicator light is on and the M1 indicator light is on, the DTU is working in mode 3
---|---

Sending

|

Unable to transmit data wirelessly.

Receiving

|

Unable to receive data wirelessly.

Register read and write control

Instruction format
In configuration mode (mode 2: M1 indicator light is on, M0 indicator light is off), the supported command list is as follows (when setting, only 9600, 8N1 format is supported):

No.	Instruction Format	Detailed Description

1

|

Set Register

| Command: C0+start address+length+parameter C1+start address+length+parameter

Example 1: Configure the channel as 0x09

Instruction Start Address Length Parameter Send： C0 05 01 09

Return： C1 05 01 09

Example 2: Configure the radio address (0x1234), network address (0x00), serial port (9600 8N1), airspeed (1.2K) at the same time

Send： C0 00 04 12 34 00 61

Return：C1 00 04 12 34 00 61

2

|

Read Register

| Command: C1+start address+length Response: C1+start address+length+parameter

Example 1: Read the channel

Instruction Start Address Length Parameter Send： C1 05 01

Return： C1 05 01 09

Example 2: Read the DTU address, network address, serial port, airspeed at the same time Send： C1 00 04

Return：C1 00 04 12 34 00 61

3

|

Set Up Temporary Register

| Command: C2 + start address + length + parameters Response: C1 + start address + length + parameters

Example 1: Configure the channel as 0x09 Instruction Start Address Length Parameter

Send： C2 05 01 09

Return： C1 05 01 09

Example 2: Configure the DTU address (0x1234), network address (0x00), serial port (9600 8N1), airspeed (1.2K) at the same time

Send： C2 00 04 12 34 00 61

Return：C1 00 04 12 34 00 61

5

|

Wireless Configuration

| Instructions: CF CF + regular instructions Response: CF CF + regular response

Example 1: The wireless configuration channel is 0x09

Wireless Command Header Command Start Address Length Parameter Send： CF CF C0 05 01 09

Return： CF CF C1 05 01 09

Example 2: Wirelessly configure the DTU address (0x1234), network address (0x00), serial port (9600 8N1), airspeed (1.2K) at the same time

Send： CF CF C0 00 04 12 34 00 61

Return：CF CF C1 00 04 12 34 00 61

6

|

Format Error

| Format Error Response FF FF FF

Register description

No.

| Read and

Write

|

Name

|

Description

|

Remarks

---|---|---|---|---

00H

|

Read/Write

|

ADDH

|

ADDH（Default 0）

| High byte and low byte of radio address;

Note: When the DTU address is equal to FFFF, it can be used as the broadcast and monitor address, that is: the DTU will not perform address filtering at this time

When communicating with each other, they should be set to the same.

---|---|---|---|---
| | | 7| 6| 5| UART serial port rate (bps)| For two DTUs that communicate with each other, the serial port baud rate can be different, and the verification method can also be different;

When continuously transmitting large data packets, users need to consider the data congestion caused by the same baud rate, and may even be lost;

It is generally recommended that the baud rate of the two communication parties be the same.

| | | 0| 0| 0| The serial port baud rate is 1200
| | | 0| 0| 1| The serial port baud rate is 2400
| | | 0| 1| 0| The serial port baud rate is 4800
| | |

0

|

1

|

1

| The serial port baud rate is 9600

（default）

| | | 1| 0| 0| The serial port baud rate is 19200
| | | 1| 0| 1| The serial port baud rate is 38400
| | | 1| 1| 0| The serial port baud rate is 57600
| | | 1| 1| 1| The serial port baud rate is 115200
| | | 4| 3| Serial parity bit|

The serial port mode of the two communication parties can be different;

03H

|

Read/Write

|

REG0

| 0| 0| 8N1（default）
0| 1| 8O1
| | | 1| 0| 8E1
| | | 1| 1| 8N1（ 00）
| | | 2| 1| 0| Wireless air rate (bps)|

The air rate of both parties must be the same;

The higher the air rate, the smaller the delay and the shorter the transmission distance.

| | | 0| 0| 0| Air speed 0.3k
| | | 0| 0| 1| Air speed 1.2k
| | | 0| 1| 0| Air speed 2.4k（default）
| | | 0| 1| 1| Air speed 4.8k
| | | 1| 0| 0| Air speed 9.6k
| | | 1| 0| 1| Air speed 19.2k
| | | 1| 1| 0| Air speed 38.4k
| | | 1| 1| 1| Air speed 62.5k

04H

|

Read/Write

|

REG1

| 7| 6| Data Packet Separate setting| The data sent by the user is less than the data packet separate length, and the serial port output of the receiving end appears as an uninterrupted continuous output;

If the data sent by the user is larger than the data packet separate length, the serial port of the receiving end will be output in packets.

0| 0| 240 Bytes（default）
0| 1| 128 Bytes
1| 0| 64 Bytes

1

|

1

|

32 Bytes

5| RSSI Environmental noise enable| After enabling, you can send commands C0 C1 C2 C3 in transmission mode or WOR sending mode to read registers;

Register 0x00: Current environmental noise RSSI;

Register 0X01: RSSI when receiving data last time

(The current channel noise is: dBm

=-RSSI/2);

Instruction format: C0 C1 C2 C3 + start address + read length;

Return: C1 + address address + read length + read effective value; for example: send C0 C1 C2 C3 00 01

Return C1 00 01 RSSI

0| Disabled (default)

1

|

Enable

| | |

4

|

3

|

2

|

Remain

|
| | | |
---|---|---|---|---
| | | The relationship between power and current is non-linear, and the power supply has the highest efficiency at maximum power;

The current will not decrease in the same proportion as the power decreases.

|
|
|
| |

05H

|

Read/Write

|

REG2

| Channel Control (CH)

1

|

Actual frequency = 433MHz

06H

|

Read/Write

|

REG3

| 7| Enable RSSI byte| After being enabled, the DTU receives wireless data and outputs it through the serial port TXD, followed by an RSSI strength byte.
0| Disabled (default)
1| Enable
6| Transfer method| During fixed-point transmission, the DTU will recognize the three bytes of serial data as: address high + address low + channel, and use it as a wireless transmission target.
0| Transparent transmission (default)
1| Fixed point transmission
5| Relay function| After the relay function is enabled, if the target address is not the DTU itself, the DTU will start a forwarding;

In order to prevent data from returning, it is recommended to use it in conjunction with the fixed-point mode; that is, the destination

address is different from the source address.

0| Disable relay function (default)

1

|

Enable relay function

4| LBT Enable| After enabling, monitoring will be conducted before wireless data transmission, which can avoid interference to a certain extent, but may cause data delay;

The maximum stay time of LBT is 2 seconds, and it will be issued forcibly when it reaches 2 seconds.

0| Disabled (default)

1

|

Enable

3| WOR Mode send and receive control|

Only valid for mode 1;

After the WOR receiver receives the wireless data and outputs it through the serial port, it will wait 1000ms before entering the WOR again. The user can input the serial port data during this period and return it via wireless;

Each serial port byte will be refreshed for 1000ms;

The user must initiate the first byte within 1000ms.

0

| WOR receiver (default)

The transceiver is turned on, and when transmitting data, a wake-up code for a certain period of time is added.

1

| WOR transmitter

The DTU cannot transmit data, and it works in WOR monitoring mode. The monitoring period is shown below (WOR period), which can save a lot of power consumption.

2| 1| 0| WOR Cycle| Only valid for mode 1;

Cycle T= (1+WOR)*500ms, the maximum is 4000ms, the minimum is 500ms;

The longer the WOR monitoring interval period, the lower the average power consumption, but the greater the data delay;

Both sender and receiver must agree (very important)

0| 0| 0| 500ms
0| 0| 1| 1000ms
0| 1| 0| 1500ms
0| 1| 1| 2000ms
1| 0| 0| 2500ms
1| 0| 1| 3000ms
1| 1| 0| 3500ms
| | | 1| 1| 1| 4000ms|
---|---|---|---|---|---|---|---

07H

|

Write

| CRYPT

_H

| High byte of key

(default 0)

| Only write, read returns 0;

Used for encryption to avoid interception of wireless data in the air by similar DTUs;

The DTU will use these two bytes as a calculation factor to transform and

encrypt the air wireless signal.

08H

|

Write

| CRYPT

_L

| Low byte of key

(default 0)

80H

～

86H

|

Read

|

PID

|

Product information 7 bytes

|

Product information 7 bytes

Relay Network Mode Use

No.	Relay mode description

1

| After setting the relay mode through the configuration mode, switch to the normal mode and the relay starts to work.

2

| In relay mode, ADDH and ADDL are no longer used as radio addresses, but correspond to NETID forwarding and pairing respectively. If one network is received, it will be forwarded to another network.

The network ID of the repeater itself is invalid.

3

| ****

In the relay mode, the relay station cannot send and receive data, and cannot perform low-power operation.

4

| When the user enters other modes from mode 3 (sleep mode) or is in the reset process, the radio will reset the user parameters, during which AUX outputs low level.

Description of relay networking rules:

Forwarding rules, the relay can forward data in both directions between two NETIDs.
In the relay mode, ADDH\ADDL is no longer used as a DTU address, but as a NETID forwarding pairing. As shown
Primary relay

  * “Node 1” NETID is 08.
  * “Node 2” NETID is 33.
  * The ADDH\ADDL of relay 1 are 08 and 33 respectively.
  * So, the signal sent by node 1 (08) can be forwarded to node 2 (33)
  * At the same time, node 1 and node 2 have the same address, so the data sent by node 1 can be received by node 2
2.  **Secondary relay**
  * The ADDH\ADDL of relay 2 are 33 and 05 respectively.
  * So, Relay 2 can forward the data of Relay 1 to the network NETID: 05.
  * Therefore, node 3 and node 4 can receive node 1 data. Node 4 normally outputs data, and node 3 has a different address from node 1, so no data is output.
3.  **Two-way relay

** As shown in the configuration: the data sent by node 1 can be received by nodes 2 and 4, and the data sent by nodes 2 and 4 can also be received by node 1. EBYTE-E95-DTU-Wireless-Module-11

PC Configuration Instructions

The following figure shows the display interface of the E95-DTU (400SL22-485) configuration host computer. The user can switch to the configuration mode through the MODE button, and quickly configure and read the parameters on the host computer.
In the configuration of the host computer, the DTU address, frequency channel, network ID, and key are all in decimal display mode, and the value range of each parameter:
- Network Address: 0～65535
- Frequency Channel: 1
- Network ID： 0～255
- Key: 0～65535
When using the host computer to configure the relay mode, the user needs to pay attention. Since the parameters in the host computer are in decimal display mode, the DTU address and network ID need to be converted when filling in. If the network ID input by the transmitting terminal A is 02, and the network ID input by the receiving terminal B is 10, when the relay terminal R sets the radio address, the hexadecimal value 0X020A is converted to the decimal value 522 as the relay terminal R. Radio address. That is, the radio address value that needs to be filled in by the relay terminal R at this time is 522.

Program the DTU

EBYTE-E95-DTU-Wireless-Module-13

Operating

Mode

| ****

M1

| ****

M0

| ****

Remark

---|---|---|---
Configuration

mode

| ****

Light On

| Light Off| Only use the configuration software to program the DTU in the

current mode

Programming can only be carried out in a specific working mode (see the above table). If the programming fails, please confirm whether the working mode of the DTU is correct.
If you don’t need complicated programming to open the E95-DTU (400SL22-485) configuration software, you can modify the relevant parameters.

Connection Diagram in Test and Practical Application

EBYTE-E95-DTU-
Wireless-Module-14

Model

| ****

Interfac e Type

| ****

Frequency Hz

| Transmit power

dBm

| ****

Distance km

| ****

Features

---|---|---|---|---|---
E95-DTU(400SL30-485)|

RS485

| ****

410.125/493.125M

| ****

30

| ****

10

| Cost-effective LoRa, Rail Type, RS232,

E90-DTU SL series intercommunication

E95-DTU(400F20-485)

| ****

RS485

| ****

410/510M

| ****

20

| ****

1

| Ultra-low price digital DTU, Rail Type, RS485,, E90-DTU F series

intercommunication

E95-DTU(433L20-485)|

RS485

| ****

410/441M

| ****

20

| ****

3

| Cost-effective LoRa, Rail Type, RS485,

E90-DTU L series intercommunication

E95-DTU(433L30-485)|

RS485

| ****

410/441M

| ****

30

| ****

8

| Cost-effective LoRa, Rail Type, RS485,

E90-DTU L series intercommunication

E95-DTU(433L20-232)|

RS232

| ****

410/441M

| ****

20

| ****

3

| Cost-effective LoRa, Rail Type, RS232,

E90-DTU L series intercommunication

E95-DTU(433L30-232)|

RS232

| ****

410/441M

| ****

30

| ****

8

| Cost-effective LoRa, Rail Type, RS232,

E90-DTU L series intercommunication

E95-DTU(400F20-232)

| ****

RS232

| ****

410/510M

| ****

20

| ****

1

| Ultra-low price digital DTU, Rail Type, RS232,, E90-DTU F series

intercommunication

E95-DTU(400SL22-232)|

RS232

| ****

410.125/493.125M

| ****

22

| ****

5

| Cost-effective LoRa, Rail Type, RS232,

E90-DTU SL series intercommunication

E95-DTU(400SL30-232)|

RS232

| ****

410.125/493.125M

| ****

30

| ****

10

| Cost-effective LoRa, Rail Type, RS232,

E90-DTU SL series intercommunication

Practical Application

Ebyte DTU is suitable for all kinds of point-to-point and point-to-multipoint wireless data transmission systems, such as smart homes, IoT transformation, power load monitoring, distribution automation, hydrology and water regime monitoring and reporting, tap water pipe network monitoring, urban street lights Industrial automation such as monitoring, air defense alarm control, railway signal monitoring, railway water supply centralized control, oil and gas supply pipeline network monitoring, GPS positioning system, remote meter reading, electronic hoisting scale, automatic target reporting, earthquake observation and reporting, fire prevention and theft prevention, environmental monitoring, etc. System, as shown below:

Precautions for Use

Please take good care of the warranty card of the device. The warranty card contains the factory number (and important technical parameters) of the device, which has important reference value for the user’s future maintenance and new equipment.
During the warranty period, if the DTU is damaged due to the quality of the product itself rather than man-made damage or natural disasters such as lightning strikes, it enjoys free warranty; please do not repair by yourself, and contact our company if there is a problem. Ebyte provides first-class After-sales service.
Do not operate this DTU in the vicinity of some flammable places (such as coal mines) or explosive dangerous objects (such as detonators for detonation).
A suitable DC stabilized power supply should be selected, which requires strong anti-high frequency interference, small ripple, and sufficient load capacity; preferably, it should also have over-current, over-voltage protection and lightning protection functions to ensure that the DTU is normal jobs.
Do not use it in a working environment that exceeds the environmental characteristics of the DTU, such as high temperature, humidity, low temperature, strong electromagnetic field or dusty environment.
Don’t let the DTU continuously be in full load transmitting state, otherwise the transmitter may be burnt out.
The ground wire of the DTU should be well connected with the ground wire of the external equipment (such as PC, PLC, etc.) and the ground wire of the power supply, otherwise the communication interface will be burnt easily; do not plug or unplug the serial port with power on.
When testing a DTU, you must connect a matching antenna or a 50Ω dummy load, otherwise the transmitter will be easily damaged; if the antenna is connected, the distance between the human body and the antenna should be more than 2 meters to avoid injury. Touch the antenna when transmitting.
Wireless data transmission stations often have different communication distances in different environments. The communication distance is often affected by temperature, humidity, obstacle density, obstacle volume, and electromagnetic environment; in order to ensure stable communication, it is recommended to reserve more than 50% The communication distance margin.
If the measured communication distance is not ideal, it is recommended to analyze and improve the communication distance from the antenna quality and antenna installation method. You can also contact support@cdebyte.com for help.
When selecting the power supply, in addition to keeping 50% of the current margin as recommended, it should also be noted that its ripple must not exceed 100mV.
Wireless communication products need to be connected to an impedance-matched antenna to work normally. Even short-term tests cannot be omitted. Product damage caused by this reason will not be covered by the warranty.

Important Statement

Ebyte reserves the right of final interpretation and modification of all contents in this manual.
Due to the continuous improvement of product hardware and software, this manual may be changed without prior notice. The latest version of the manual shall prevail.
It is everyone’s responsibility to protect the environment: In order to reduce the use of paper, this manual only prints the Chinese part, and the English manual only provides electronic documents. If necessary, please downloaitfrom our official website; in addition, if not specifically requested by the user, the user can order in bulk At the time, we only provide product manuals according to a certain percentage of the order quantity, not every DTU is matched with it, please understand.

Revision History

Version	Date	Description	Issued By
1.0	2020-08-17	Original Version	ken

About us

Technical support:support@cdebyte.com
Documents and RF Setting download link: ：www.ebyte.com
Thank you for using Ebyte products! Please contact us with any questions or suggestions: info@cdebyte.com
Official hotline: 028-61399028
Web: www.ebyte.com
Address: B5 Mould Park, 199# Xiqu Ave, High-tech District, Sichuan, China

FCC Statement

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

This device may not cause harmful interference, and
this device must accept any interference received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures

Reorient or relocate the receiving antenna
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.