netvox RA02C Wireless CO Detector User Manual

: June 9, 2024
: netvox

Table of Contents

Introduction
Appearance
Main Feature
Set up Instruction
Data Report
Important Maintenance Instruction
References
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Download This Manual (PDF format)

netvox RA02C Wireless CO Detector User Manual

Introduction

RA02C is a CO/temperature detector for Netvox Class-A devices based on the LoRa WAN open protocol and is compatible with the LoRa WAN protocol.

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 extend 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:
LoRa WAN uses Lo Ra technology to define end-to-end standard specifications to ensure interoperability between devices and gateways from different manufacturers

Appearance

Main Feature

2 x 1.5V AAA size alkaline batteries
CO and temperature detection
Compatible with LoRaWANTM 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 set 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

Power on| Insert batteries. (Users may need a screwdriver to open the cover)
---|---
Turn on| Press any function key to turn on the device. After releasing the key, the red and green indicators will flash at the same time to indicate that it turns on successfully.
Turn off (Restore to factory setting)| Press and hold both keys for 5 seconds till the green indicator flashes and then release; LED flashes quickly 20 times.
Power off| Remove Batteries.
** Note:**|

After remove and insert the battery, the device memorizes previous on/off state by default.
On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor inductance and other energy storage components.
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: successThe green indicator remains off: fail
Fail to join the network| Suggest to check the device verification information on the gateway or consult your platform server provider.

Function Key and Test Key

Press and hold both keys for 5 seconds| Restore to factory setting / Turn offThe green indicator flashes 20 times: success The green indicator remains off: fail
---|---
Press function key 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
**** Press test key once| The device is in the network: The buzzer alarms for 5 seconds, the red indicator flashes 5 times, and sends a reportThe device is not in the network: green indicator remains off

Sleeping Mod

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

Low Voltage Warning

Low Voltage Threshold	2.4V

Data Report

The device will immediately send a version packet report and a data report. Data will be reported by default setting before any configuration.

Default setting:

Max Interval = 0x0E10 (3600s)
Min Interval = 0x0E10 (3600s) (The voltage is detected every Min Interval by default.)
Battery Voltage Change: 0x01 (0.1V)

CO Trigger:

The CO concentration is sampled 30 seconds after the device is powered up, when the concentration is higher than 110 ppm, the red indicator light flashes, the buzzer alarms and immediately sends a report (CO alarm bit is 1). If the alarm continues, the report will be sent every 30 seconds. When the concentration drops below 110ppm, the flashing end alarm will be stopped and an alarm will be sent to restore the report.

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°C, the buzzer will alarm, the red indicator will flash, and a report will be sentim me diately. (The fire alarm bit is 1.)

If the alarm continues, the report will be sent every 1 minute. When the temperature below 60°C, the flashing end alarm will be stopped and an alarm will be sent to restore the report. (The fire alarm bit is 0.)

Note:

The device report interval will be programmed based on the default firmware.
The interval between two reports must be the minimum time.
The reported data is decoded by the Netvox LoRaWAN Application Command document and http://cmddoc.netvoxcloud.com/cmddoc

Example of Report Data Cm d

FP ort: n0x06

Bytes	1	1	1	Var(Fix=8 Bytes)
Version	Device Type	Report Type	Net vox Pay Load Data

Version– 1 byte –0x01——the Version of NetvoxLoRaWAN Application Command Version
Device Type– 1 byte – Device Type of Device
The device type is listed in Netvox LoRa WAN Application Devicetype doc
Report Type – 1 byte –the presentation of the NetvoxPayLoadData，according the device type
Netvox Pay Load Data – Fixed bytes (Fixed =8bytes)

Device| Device
Type| Report
Type| NetvoxPayLoadData
---|---|---|---
RA02C| 0x11| 0x01| Battery
(1Byte, unit:0.1V)| CO Alarm (1Byte)
0:no alarm 1:alarm| High Temp Alarm (1Byte)
0:noalarm 1:alarm| Reserved
(5Bytes,fixed 0x00)

Example of Uplink: 0111011C01010000000000

1st byte (01): Version
2nd byte (11): DeviceType 0x11－ RA02C
3rd byte (01): ReportType
4th byte (1C) : Battery－2.8v , 1C Hex=28 Dec 28*0.1v=2.8v
5th byte (01) : CO Alarm
6th byte (01): High Temperature Alarm
7th ~ 11th byte (0000000000): Reserved

Example of Con figure Cm d

FPort: 0x07

Bytes	1	1	Var (Fix =9 Bytes)
CmdI D	Device Type	Net vox Pay Load Data

Cm dID– 1 byte
Device Type– 1 byte – Device Type of Device
Net vox Pay Load Data– var bytes (Max=9bytes)

Description| Device| Cm dID| Device
Type| Net vox Pay Load Data
---|---|---|---|---
Config
ReportReq|

RA02C

| 0x01|

0x11

Command Configuration:
Min Time = 1min, Max Time = 1min, Battery Change = 0.1v
Dow bnlink: 0111003C003C0100000000 003C(Hex) = 60(Dec)
Resp bonse: 8111000000000000000000 (Configuration success) 8111010000000000000000 (Configuration failure)
Read Configuration:
Downlink: 0211000000000000000000
Response: 8211003C003C0100000000 (Current configuration)

Example for Min Time /Max Time logic

Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. Battery Voltage Change=0.1V
Max Time logic

Max Time =Min Time. Data will only be report according to MaxTime (MinTime) duration regardless Battery Voltage Change value.

Example#2 based on Min Time = 15 Minutes, Max Time= 1 Hour, Reportable Change i.e. Battery Voltage Change= 0.1V.
Max Time logic

Example#3 based on Min Time = 15 Minutes, Max Time= 1 Hour, Reportable Change i.e. Battery Voltage Change= 0.1V.
Max Time logic

Notes:

The device only wakes up and performs data sampling according to MinTime Interval. When it is sleeping, it does not collect data.
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.
We do not recommend to set 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.
Whenever the device sends a report, no matter resulting from data variation, button pushed or Max Time interval, another cycle of Min Time / Max Time calculation is started.

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 dusty or dirty environment. It might damage its detachable parts and electronic components.
Do not store the device under excessive heat condition. 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.

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.

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