NETVOX LoRaWan Wireless Emergency Button, R312A is a wireless emergency button that detects after pressing the emergency button and sends an alarm message to the gateway. It uses the SX1276 wireless communication module.

Example Applications

The device could be used as a personal alarm system, as well as fire alarm etc. When the emergency button is pressed, the IO port of the module detects a low level, and when the emergency button is released, the IO port of the module detects a high level.

Features of NETVOX Sensors

Please refer to web: http://www.netvox.com.tw/electric/electric_calc.html

* Actual range may vary depending on environment.

* Battery life is determined by sensor reporting frequency and other variables

Technical Specifications

Input Power	2pcs 3.0V CR2450 button battery
Working Voltage	DC 2.4V～3V
Standby Current	13uA/3.0V
Tx Current	120mA/3.0V
Rx Current	11mA @3.0V

Voltage Threshold	2.4V
Battery Voltage measurement accuracy	±0.1V

Frequency

Tx Power	19dBm±1dBm
Rx Sensitivity	-136dBm (LoRa，Spreading Factor=12，Bit Rate=293bps ) -121dBm (FSK,Frequency deviation=5kHz, Bit Rate=1.2kbps)
Antenna Type	Build-in antenna
Communication Range	Build-in antenna
Data Transfer Rate	0.3kbps～50kbps
Spread Technique	LoRa/FSK
Available Frequency	EU863-870，US902-928，AU915-928， KR920-923，AS923，CN470-510 Configured before shipment

Physical

Main Body Dimension	57mm x 35mm x 15mm
Weight	45g
Operating Temperature	-20℃ ～ 55℃
Environment Humidity Range	<90% RH (No condensation)
Storage Temperature	-40℃ ～ 85℃

Datasheet:

R312A.pdf

User manual:

R312A_UG.pdf

Battery Calculator:

Netvox Battery Calculator

Netvox LoRa Command Resolver:

LoRa Command Resolver

R312A - Netvox LoRaWan Wireless Emergency Button