Sku: R718E-AS923

Availability: Many In Stock
Sku: R718E-AS923

NETVOX Wireless Accelerometer and Surface Temperature Sensor - R718E detect the movement or vibration of the device, send a signal to the gateway for processing, and externally connect one NTC thermistor to detect the surface temperature of the measured object. It uses the SX1276 wireless communication module


Principle of Operation

The module communicates with the acceleration sensor ADXL345 in SPI communication mode; the NTC temperature detection applies the method of resistance voltage divider ADC sampling.


Example Applications

  • Smart home
  • Industrial equipment 
  • Temperature measurement system 
  • Other


    Features of NETVOX Sensors

    • Wireless range of 10 km *
    • LoRaWANTM Class A compatible
    • Frequency Hopping Spread Spectrum (FHSS)
    • Improved interference immunity
    • Improved power management for longer battery life
    • Encrypt-RF™ Security (Diffie-Hellman Key Exchange + AES-128 CBC for sensor data messages)
    • Battery Life* :
    5 years (Conditions: ambient temperature 25 °C, 20 triggers/day, txpower = 20dBm, LoRa spreading factor SF = 10)
    • Over-the-air updates (future)
    • Third-Party online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email (optional)
    • Available third-party platform: Actility/ThingPark, TTN, MyDevices/Cayenne
    • R718X series carry magnets which can be attached to ferromagnetic materials and objects
    *Actual range may vary depending on environment.
    *Battery life is determined by sensor reporting frequency and other variables


    Technical Specifications 

    Input Power 2 x 3.6V ER14505 AA lithium batteries
    Sleeping Mode 36uA
    Wake up Mode 6.3mA @ 3.3V
    Low Voltage Threshold 3.2V
    Tx Current 120mA/3.0V
    Rx Current 11mA @3.0V
    Battery Life  

    3.4 years

    (Conditions: ambient temperature 25 °C, 15 min heartbeats, txpower = 20dBm, LoRa spreading factor SF

    = 10)



    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


    NTC Thermistor Sensor

    NTC Temperature Range

    -40℃ -125℃ 

    25 Degree Resistance Value

    10k (typical)

    B value B25/50


    Temperature Measurement Accuracy

    The basic error limit of NTC thermistor: -40~125°C +-3°C; Measurement error caused by the wire : ≦ 2 ° C


    3-axis Acceleration Sensor

    Operating Voltage Range     


    Operating Temperature Range

     -40~85 degrees

    Dac Maximum Resolution

    13 Bits   

    Communication Form

    SPI communication

    3-axis Acceleration Longitude 






    Sensor cover size: D: 16mm*L: 34.5mm,



    Operating Temperature

    -20℃ ~ 55℃

    Environment Humidity Range

    <90% RH (No condensation)

    Storage Temperature

    -40℃ ~ 85℃




    User manual:


    Battery Calculator: 

    Netvox Battery Calculator 

    Netvox LoRa Command Resolver: 

    LoRa Command Resolver

    R718E - Netvox LoRaWan Wireless Accelerometer and Surface Temperature Sensor

    Sku: R718E-AS923

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