Sku: R831D-AS923

Availability: Many In Stock
Sku: R831D-AS923

Netvox Wireless Multifunctional Control Box - 3 Dry Contact Inputs and 3 Dry Contact

The R831D is a Wireless Multifunctional Control Box device for Netvox Class C type devices based on the LoRaWAN open protocol and is compatible with the LoRaWAN protocol.

R831D is designed to control switch devices, mainly for electrical appliances. R831D allows you to connect and control 3 buttons and 3 dry contacts. The connected buttons and dry contacts will not affect each other. It will report 3 relay status and 3 input status.

R831D have three relay switches(output) and three dry contacts(input).

R831D can report status of 3 dry contacts individually and control 3 relays


Application scenario


  • Smart switches that can be applied in indoor environments such as home or office
  • Remote-controlled devices that can response in real time
  • Others


Features of NETVOX Sensors

    • LoRaWAN Class C compatible
    • Frequency Hopping Spread Spectrum (FHSS)
    • 3 Way relays and dry contact
    • 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*:
    • At this website, users can find battery life time for varier models at different
    • 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

* Actual range may vary depending on environment.

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


Technical Specifications

Input Power 12V DC power supply
Working current 20mA (12VDC)
Relay Load Characteristics
AC250V/5A, DC30V/5A (contact load)
Relay Power consumption
Relay Type
Magnetic Latching Relay
Relay Model



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



Main Body Dimension

66mm x 47mm x 20.3 mm

Working Temperatre

-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

R831D - Netvox Wireless Multifunctional Control Box - 3 Dry Contact Inputs and 3 Dry Contact

Sku: R831D-AS923

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