netvox RA02A User manual

Model：RA02A
Wireless Smoke Sensor
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.

1
Table of Content
1. Introduction...........................................................................................................................................2
2. Appearance............................................................................................................................................3
3. Main Feature......................................................................................................................................... 3
4. Set up Instruction.................................................................................................................................. 4
5. Data Report........................................................................................................................................... 5
6. Installation.............................................................................................................................................9
7. Important Maintenance Instruction.................................................................................................... 10

2
1. Introduction
RA02A is a smoke sensor which 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 which 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 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:
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:

3
2. Appearance
3. Main Feature
2 x 1.5V AAA size alkaline batteries
Smoke alarm 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.
LED
Function Key
Test Key
Battery Casing
Fixed Chassis

4
4. Set up Instruction
On/Off
Power on
Insert batteries. (Users may need a screwdriver to open the cove0.r)
Turn on
Press any function key till the green indicator flashes once.
Turn off
(Restore to factory setting)
Press and hold the function key for 5 seconds, and the green indicator flashes 20 times.
Power off
Remove Batteries.
Note:
1. After remove and insert the battery, the device memorizes 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 to check the device verification information on the gateway or consult your platform
server 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 reportchange exceeds setting value or the state changes, a data report will be sent
according to Min Interval.
Low Voltage Warning
Low Voltage
2.4V

5
5. 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 following:
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

6
Example of ConfigureCmd
FPort：0x07
Bytes
1
1
Var (Fix =9 Bytes)
CmdID
DeviceType
NetvoxPayLoadData
CmdID– 1 byte
DeviceType– 1 byte – Device Type of Device
NetvoxPayLoadData– var bytes (Max=9bytes)
(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）
Description
Device
CmdID
Device
Type
NetvoxPayLoadData
Config
ReportReq
RA02A
0x01
0x0A
MinTime
(2bytes Unit: s)
MaxTime
(2bytes Unit: s)
BatteryChange
(1byte Unit: 0.1v)
Reserved
(4Bytes, Fixed 0x00)
Config
ReportRsp
0x81
Status
(0x00_success)
Reserved
(8Bytes, Fixed 0x00)
ReadConfig
ReportReq
0x02
Reserved
(9Bytes, Fixed 0x00)
ReadConfig
ReportRsp
0x82
MinTime
(2bytes Unit: s)
MaxTime
(2bytes Unit: s)
BatteryChange
(1byte Unit: 0.1v)
Reserved
(4Bytes, Fixed 0x00)

7
Example for MinTime/MaxTime logic:
Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange=0.1V
Max Time Max Time
Sleeping (Min Time) Sleeping (Min Time)
1H 2H 3H
Note:
MaxTime=MinTime. Data will only be report 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.
MaxTime
Sleeping (MinTime) sleeping sleeping sleeping
0H 15th M 30th M 45th M1H 2H
Example#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.
MaxTime
sleeping sleeping ...
0H 15th M30th M45th M 1H 1H 10th M1H 25th M 1H 40th M 1H 55th M2H 10th M
Wakes up and
collects data
2.8V
Does not report
Wakes up and
collects data
REPORTS 2.8V
Wakes up and
collects data
REPORT 2.8V
Wakes up and
collects data
REPORTS
2.8V
Wakes up and
collects data
2.7V |2.7-2.8|=0.1
REPORTS 2.7V
Wakes up and
collects data
2.7V
Does not report
Wakes up and
collects data
2.7V
Does not report
Wakes up and
collects data
2.7V
Does not report
Wakes up and
collects data 2.7V
Does not report
Wakes up and
collects data
2.7V
Does not report
Wakes up and
collects data
REPORTS
2.7V
Wake up and
collects data
REPORTS 2.8V
Wakes up and
collects data
REPORTS 2.8V
Wakes up and
collects data
REPORTS 2.8V
Wakes up and
collects data
2.8V
Does not report
Users push the button,
REPORTS 2.7V.
Recalculate MaxTime.
Wakes up and
collects data
2.8V
Does not report
Wakes up and
collects data
2.8V
Does not report

8
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 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.
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.

9
6. 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 the
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

10
7. 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.