[Number of channels]：83

[Communication method]：RS485/LoRa wireless spread spectrum (SX1262)

[AI/AO input mode]：0/4～20mA

[Transmit power]：160mW (22dBm)

[Measured distance]：4000 meters

[Antenna interface]：SMA female thread female pin

[Product weight]：164±5g

[Introduction]：This product is a product with two functions.The shell adopts three-proof coating, which is Anti-Fungal, Anti-Humidity, and Anti-Salt Spray. Function: The sender collects 4-channel analog signals (0/4～20mA) and transmits the data to the receiver through wireless (LoRa spread spectrum), and the receiver restores the 4-channel analog signal (0/4～20mA).