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R831D have three relay switches(output) and three dry contacts(input).
R831D can report status of 3 dry contacts individually and control 3 relays

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R831D have three relay switches(output) and three dry contacts(input).
R831D can report status of 3 dry contacts individually and control 3 relays

Adopt SX1276 wireless communication module
Three-way relays and dry contacts
Compatible with LoRaWAN Class C
Frequency hopping spread spectrum technology
Configuration parameters can be configured through third-party software
platforms, data can be read and alerts can be set via SMS text and email(optional)
Applicable to third-party platforms: Actility / ThingPark, TTN, MyDevices / Cayenne

Electric:

Operating Voltage	DC 12V / 1A
Operating Current	20mA (12V) (There are no relay action status and data sent by LoRa.) <250mA (12V)( There are relay action status and data sent by LoRa.)
Relay Load Characteristics	Contact load: DC30V/5A
Relay Coil Power Consumption	300mW
Relay Type	Magnetic Latching Relay
Relay Model	HFE60/5-1HSTGL2R

Frequency:

Frequency Range	863MHz-928MHz 470MHz-510MHz
TX Power	US915 20dbm； AS923 16dbm； AU915 20dbm； CN470 19.15dbm； EU868 16dbm； KR920 14dbm； IN865 20dbm；
Receiving Sensitivity	-136dBm（LoRa，Spreading Factor=12，Bit Rate=293bps )； -121dBm (FSK,Frequency deviation=5kHz, Bit Rate=1.2kbps)
Antenna Type	Built-in antenna
Communication Distance	Up to 10 km (visible linear obstacle-free transmission distance , actual transmission distance depends on the environment )
Data Transfer Rate	LoRa: 0.3kbps～50kbps FSK: 1.2kbps～300kbps
Modulation	LoRa/FSK (Note: You can choose one of them)
Supportable LoRaWAN Band	EU863-870,US902-928,AU915-928,KR920-923,AS923-1,AS923-2,AS923-3, IN865-867,CN470-510 (Note: The frequency band is optional and needs to be configured before shipment)

Physical: