netvox Wireless Smoke Detector RA02A User Manual

Wireless Smoke Detector
Model: RA02A
User Manual

Copyright©Netvox Technology Co., Ltd.
This document contains proprietary technical information which is the property of NETVOX Technology. It shall be maintained in strict confidence and shall not be disclosed to other parties, in whole or in part, without written permission of NETVOX Technology. The specifications are subject to change without prior notice.

Introduction

RA02A is a smoke sensor that is the Class A device based on LoRa private protocol of Netvox. It is compatible with the Netvox LoRa protocol.
Note:
RA02A is an auxiliary smart smoke sensor that must be installed with the fire- fighting smoke sensor. RA02A cannot be used to
replace the fire-fighting smoke sensor.
LoRa Wireless Technology:
LoRa is a wireless communication technology famous for its long-distance transmission and low power consumption. Compared
with other communication methods, LoRa spread spectrum modulation technique greatly extends the communication distance. It can be widely used in any use case that requires long-distance and low-data wireless communications. For example, automatic meter reading, building automation equipment, wireless security systems, industrial monitoring. It has features like small size, low
power consumption, long transmission distance, strong anti-interference ability, and so on.
LoRaWAN:
LoRaWAN uses LoRa technology to define end-to-end standard specifications to ensure interoperability between devices and
gateways from different manufacturers.
This device has been certified by the LoRa Alliance and is allowed to use the following logo on the product:

Appearance

Main Feature

• 2 x 1.5V AAA-size alkaline batteries
• Smoke alarm and temperature detection
• Compatible with LoRaWAN™ Class A
• Frequency-hopping spread spectrum
• Configuration parameters can be configured via a third-party software platform, data can be read and alerts can be sent via SMS text and email (optional)
• Applicable to the third-party platforms: Actility/ ThingPark, TTN, MyDevices/ Cayenne
• Low power consumption and long battery life

*Note:**
Battery life is determined by the sensor reporting frequency and other variables.
Please refer to http://www.netvox.com.tw/electric/electric_calc.html.
On this website, users can find various types of batteries in different configurations.

Set up Instruction

On/Off

Turn off
(Restore to factory setting)| After pressing the two function keys at the same time for 5 seconds, the green indicator will keep flashing. Then, release the function keys, the indicator will flash 20 times, and the device will automatically turn off.
Power off| Remove Batteries.
Note:| I. After removing and inserting the battery, the device memorizes the previous on/off state by default.
2. On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor inductance and other energy storage components.
3. Do not power on the device while any function key is pressed, otherwise, the device will enter the engineering test mode.

Network Joining

Never joined the network| Turn on the device to search the network.
The green indicator stays on for 5 seconds: success The green indicator remains off fail
---|---
Had joined the network| Turn on the device to search the previous network. The green indicator stays on for 5 seconds: success The green indicator remains off fail
Fail to join the network| Suggest checking the device verification information on the gateway or consult your platform service provider.

Function Key

Press and hold for 5 seconds| Restore to factory setting / Turn off
The green indicator flashes 20 times: success The green indicator remains off: fail
---|---
Press once| The device is in the network: green indicator flashes once and sends a report The device is not in the network: green indicator remains off

Sleeping Mode

The device is on and in the network| Sleeping period: Min Interval.
When the report change exceeds the setting value or the state changes. a data report will be sent according to Min Interval.
---|---

Low Voltage Warning

Data Report

The device will immediately send a version packet report and a data report with the temperature and voltage.
Data will be reported by default setting before any configuration.
Default setting:
Max Interval = 3600s
Min Interval = 3600s (The voltage is detected every Min Interval by default.)
BatteryVoltageChange: 0x01 (0.1V)
Smoke Trigger:
When the device is powered on, it starts smoke detection. When the smoke status changes, the buzzer alarms, the red indicator flashes, and the device immediately sends a report. (The fire alarm bit is 1.) When the alarm is over, it sends a report. (The fire alarm bit is 0.)
High-Temperature Alarm:
After the device is successfully connected to the network, the temperature will be sampled once every 1 minute. When the temperature is higher than 60 degrees Celsius, the buzzer will alarm, the red indicator will flash, and a report will be sent immediately. (The fire alarm bit is 1.) If the alarm continues, the report will be sent every 1 minute. When the alarm is over, that is, when the temperature is below 60 degrees Celsius, a report is sent. (The fire alarm bit is 0.)
Note:

1. The device report interval will be programmed based on the default firmware.
2. The interval between two reports must be the minimum time.

The reported data is decoded by the Netvox LoRaWAN Application Command document and http://loraresolver.netvoxcloud.com:8888/page/index

Data report configuration and sending period are as follows:

Min Interval
(Unit: second)| Max Interval
(Unit: second)| Reportable Change| Current Change≥
Reportable Change| Current Change ＜
Reportable Change
---|---|---|---|---
Any number between
1~65535| Any number between
1~65535| Can not be 0.| Report
per Min Interval| Report
per Max Interval

Example of ConfigureCmd
FPort：0x07

CmdID– 1 byte
DeviceType– 1 byte – Device Type of Device
NetvoxPayLoadData– var bytes (Max=9bytes)

Description| Device| CmdID| Device
Type| NetvoxPayLoadData
---|---|---|---|---
Config
ReportReq| RAO2A| Ox01| OxOA| MinTime
(2bytes Unit: s)| MaxTime
(2bytes Unit: s)| BatteryChange
(lbyte Unit: 0.1v)| Reserved
(4Bytes, Fixed Ox00)
Config
ReportRsp| 0x81| Status
(0x00 success)| Reserved
(8Bytes, Fixed Ox00)
ReadConfig
ReportReq| 0x02| Reserved
(9Bytes, Fixed Ox00)
ReadConfig
ReportRsp| Ox82| MinTime
(2bytes Unit: s)| MaxTime
(2bytes Unit: s)| BatteryChange
(lbyte Unit: 0.1v)| Reserved
(4Bytes, Fixed Ox00)

1. Command Configuration:
   MinTime = 1min, MaxTime = 1min, BatteryChange = 0.1v
   Downlink ： 010A003C003C0100000000 003C(Hex) = 60(Dec)
   Response：
   810A000000000000000000 （Configuration success ）
   810A010000000000000000 （Configuration failure）

2. Read Configuration:
   Downlink ： 020A000000000000000000
   Response：
   820A003C003C0100000000 （Current configuration ）
   Example for MinTime/MaxTime logic:
   Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange=0.1V

Note:
MaxTime=MinTime. Data will only be reported according to MaxTime (MinTime) duration regardless BatteryVoltageChange value.
Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.

Example#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.

Notes:

1. The device only wakes up and performs data sampling according to MinTime Interval. When it is sleeping, it does not collect data.
2. The data collected is compared with the last data reported. If the data change value is greater than the ReportableChange value, the device reports according to MinTime interval. If the data variation is not greater than the last data reported, the device reports according to MaxTime interval.
3. We do not recommend setting the MinTime Interval value too low. If the MinTime Interval is too low, the device wakes up frequently and the battery will be drained soon.
4. Whenever the device sends a report, no matter resulting from data variation, button pushed, or MaxTime interval, another cycle of MinTime / MaxTime calculation is started.

Installation

1. Align the mounting bayonet at the bottom of the sensor (the red circle in the figure below) with the assembly post of the base (the red circle in the figure below) and press it into the base, and then gently rotate the sensor counterclockwise into place.

2. When the smoke sensor detects that the smoke concentration exceeds the set value or the temperature exceeds 60°C, the device will send an “alarm” message. When the smoke concentration is lower than the set value and the regular reporting time is up, the device will return to its normal state and send the “normal” message.

3. RA02A is suitable for the following scenarios:
   • Residential
   • Hotel
   • Apartment
   • Ballroom
   • Coffee shop
   • Smart cities or smart buildings

4. RA02A is not suitable for the following scenarios
   • Places with a large amount of dust, powder, and water mist
   • Places where steam and oil mist may be generated
   • Kitchens and places where smoke stays under normal circumstances
   • Places with excessive temperature and humidity

Important Maintenance Instruction

Kindly pay attention to the following in order to achieve the best maintenance of the product:

• Keep the device dry. Rain, moisture, or any liquid might contain minerals and thus corrode electronic circuits. If the device gets wet, please dry it completely.

• Do not use or store the device in a dusty or dirty environment. It might damage its detachable parts and electronic components.

• Do not store the device under excessive heat conditions. High temperature can shorten the life of electronic devices, destroy
  batteries, and deform or melt some plastic parts.

• Do not store the device in places that are too cold. Otherwise, when the temperature rises to normal temperature, moisture will form inside, which will destroy the board.

• Do not throw, knock or shake the device. Rough handling of equipment can destroy internal circuit boards and delicate structures.

• Do not clean the device with strong chemicals, detergents or strong detergents.

• Do not apply the device with paint. Smudges might block in the device and affect the operation.

• Do not throw the battery into the fire, or the battery will explode. Damaged batteries may also explode.

All of the above applies to your device, battery, and accessories. If any device is not working properly, please take it to the nearest
authorized service facility for repair.

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