netvox RA02A User manual

Model：RA02A
Wireless Smoke Sensor
RA02A
User Manual
Version History
Date Description Version
2017-11-30 Initial Release V0.1

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Table of Content
1. Statement.................................................................................................................................................................. 2
2. Appearance............................................................................................................................................................... 2
3. Introduction.............................................................................................................................................................. 3
4. Main Features........................................................................................................................................................... 3
5. Setting Instruction....................................................................................................................................................3
5.1 Power on / Turn on / Turn off...........................................................................................................................3
5.2 Join Into Lora Network.................................................................................................................................... 4
5.3 Function Key.................................................................................................................................................... 4
6. Restore to Factory Setting....................................................................................................................................... 5
7. Sleeping Mode...........................................................................................................................................................6
8. Low Voltage Alarming............................................................................................................................................. 6
9. MyDevice Dashboard Demonstration....................................................................................................................7
10. Installation.............................................................................................................................................................. 7
11. Important Maintenance Instruction.....................................................................................................................7

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1. Statement
No part of this document may be reproduced, transmitted, distributed, or stored in any form
without the prior written permission of Netvox.
Netvox follows a strategy of continuous development. Therefore, Netvox reserves the right to
make changes and improvements to any of the products described in this document without prior
notice.
In no event will Netvox be liable for any loss of data or income or any special, incidental,
consequential or indirect damages, regardless of the cause of the loss.
The content of this document is provided "as is". Unless otherwise provided by applicable law,
no warranty of any kind, express or implied, is made as to the accuracy, reliability, and content of
this document, including but not limited to warranties of merchantability and fitness for a particular
purpose. Netvox reserves the right to revise or withdraw this document at any time without notice.
2. Appearance

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3. Introduction
RA02A is a smoke detector for Netvox Class-A devices based on the LoRaWAN open protocol and is compatible
with the LoRaWAN protocol.
LoRa Wireless Technology:
LoRa is a wireless communication technology dedicated to long distance and low power
consumption. Compared with other communication methods, LoRa spread spectrum modulation
method greatly increases to expand the communication distance. Widely used in long-distance,
low-data wireless communications. For example, automatic meter reading, building automation
equipment, wireless security systems, industrial monitoring. Main features include small size, low
power consumption, transmission distance, anti-interference ability and so on.
LoRaWAN:
LoRaWAN defines an end-to-end standard specification that uses LoRa technology to ensure interoperability
between devices and gateways from different manufacturers.
4. Main Features
Compatible with LoRaWAN
Two 1.5V alkaline batteries connected in series
Simple operation and setting
5. Setting Instruction
5.1 Power on / Turn on / Turn off
Power on:
Firstly, insert the battery on the device. Operation method: Open the battery back cover. Use a tool like a
screwdriver to assist in opening the battery cover. Take two alkaline batteries, put the batteries in the correct
direction, and cover the back cover.
Turn on：
After the batteries are inserted (without networking), the device is at turned off mode by default. 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.

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Power off while the device is on:
Unload the batteries and wait till the capacitor is discharged (10 seconds); insert the batteries back to the device. At
this time, the device is at turned on mode by default (has been turned on and there is no need to press any key to
turn on the device). The red and green indicators both turn on and off once.
Turn off：
Press and hold both keys for 5 seconds till the green indicator flashes and then release; LED flashes quickly 20
times.
Note:
1. The interval between turning on/off or powering off/on is suggested to be about 10 seconds to avoid the
interference of capacitor inductance and other energy storage components.
2. Do not press function key and insert batteries in the same time, otherwise, it will enter engineer testing mode.
5.2 Join Into Lora Network
To join the device into LoRa network to communicate with LoRa gateway. The network operation is
as following:
(1) If the device had never joined any network, turn on the device; it will search an available LoRa
network to join. The green indicator will stay on for 5 seconds to show it joins into the network,
otherwise, the green indicator will be off.
(2) If the device had been joined into a LoRa network, remove and insert the batteries; it will repeat
step (1).
5.3 Function Key
(1) Press both keys for 5 seconds at the same time to restore to factory settings. The green LED flashes 20 times to
show that it restores to factory setting successfully.
(2) Test key to test alarm (in LoRa network). Press test key shortly; the device will send a series of data (fire alarm
bit is 1). Red indicator flashes 5 times, and buzzer rings for 5 seconds, and then send a series of data after the alarm
is over (restore real alarm state).
(3) Press the function key briefly (in LoRa network), the green indicator light flashes once and sends a data.
5.4 Data Report
After the device is powered on, a version package and an attribute report data are sent immediately.
Before any configuration is done, the device defaults to send data:
Maximum time: 3600s
Minimum time: 3600s (Detect current voltage value every 3600 seconds by default)
Default reportchange: Battery - 0x01 (0.1V)

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Remarks: The real configuration depends on individual order requirement.
The interval between two reports must be the minimum time.
Trigger smoke detector:
After power on, smoke detection begins. When the status of the smoke changes, the buzzer alarms and
immediately sends a report (fire alarm bit is 1). When the alarm is over, a report is sent (the fire alarm bit is
cleared).
High temperature alarm:
The device will sample the temperature once a minute after the device joins into network. When the
temperature is higher than 60 degrees, the buzzer will alarm and immediately send a report (fire alarm bit is 1).
If the alarm persists, it will be reported every 60 seconds. When the temperature drops below 60 degrees, the
alarm ends and the device will send a report (fire alarm bit is 0).
Note: The buzzer will only turn off and the red indicator will stop flashing when all alarms are over.
Data report configuration and sending period are as following:
Remarks:
1. Actual Min Interval depends on real order from customers.
2. Since the green indicator is connected to the programming port, the software cannot control the
lamp before the program is running. Therefore, the green light will turn on when powering on.
6. Restore to Factory Setting
The device saves data including network key information, configuration information, etc. To restore
to factory setting, users need to execute below operations.
1. Press and hold both keys for 5 seconds till the green indicator flashes and then release; LED
flashes quickly 20 times.
2. The device will enter off mode by default setting after restoring to factory setting. Press function
key to turn on and join a new LoRa network.
Note: The device operation of turning off is the same as the device restore factory settings.
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

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7. Sleeping Mode
The device is designed to enter sleeping mode for power-saving in some situations:
(A) While the device is in the network → the sleeping period is Min Interval. (During this
period, if the reportchange is larger than setting value, it will wake up and send a data report).
(B) When it is not in the network → The device will enter sleeping mode and wake up every
15 seconds to search a network to join in the first two minutes. After two minutes, it will wake
up every 15 minutes to request to join the network.
If it’s at (B) status, to prevent this unwanted power consumption, we recommend that users remove
the batteries to power off the device.
Remark:
1. Min Interval programming is subject to real order.
2. Since the green light is connected to the programming port, the software cannot control the light
before the program is running, so the green light will light up when the power is turned on.
8. Low Voltage Alarming
The operating voltage threshold is 2.4V. If the voltage is lower than 2.4 V, RA02A will send a
low-power report to the Lora network.

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9. MyDevice Dashboard Demonstration
10. Installation
This product does not have a waterproof function. After networking joining is completed, please
place it indoors. This product is not suitable for places where there is a large amount of dust and
water mist; it is not suitable for places where steam and oil mist may be generated; it is not suitable
for places where smoke is normally retained.
11. Important Maintenance Instruction
Your device is a product of superior design and craftsmanship and should be used with care. The
following suggestions will help you use the warranty service effectively.
•Keep the equipment dry. Rain, moisture, and various liquids or moisture may contain minerals
that can corrode electronic circuits. In case the device is wet, please dry it completely.
•Do not use or store in dusty or dirty areas. This can damage its detachable parts and electronic
components.
•Do not store in excessive heat. High temperatures can shorten the life of electronic devices,
destroy batteries, and deform or melt some plastic parts.
•Do not store in excessive cold place. 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 wash with strong chemicals, detergents or strong detergents.

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•Do not apply with paint. Smudges can block debris in detachable parts and affect normal
operation.
•Do not throw the battery into a fire to prevent the battery from exploding. Damaged batteries
may also explode.
All of the above suggestions apply equally to your device, battery and accessories. If any device is
not working properly.
Please take it to the nearest authorized service facility for repair.