The products are used in pairs and need to be received and sent in order to be used normally. Product overview ZC32 is a single channel one to one switching module, based on LORA spread spectrum technology development, to achieve the remote transmission of switching between two modules. The input switching state of module A is associated with the relay output of module B, and the input switching state of module B is associated with the relay output of module A, which supports rail mounting. To achieve barrier-free long-distance control, widely used in industrial automation, remote monitoring, intelligent agriculture and other fields. Product parameter Interface:DI x 1, DO x 1 The output supports point-and-click and self-locking modes Communication protocol: User-defined protocol Power supply :9-24VDC Power consumption :Less than 0.3W Transmit power :20 1dBm Receiving sensitivity :-129dBm@125KHz Communication distance : 3000m @2400bps (open environment) DI input: Supports N-type input and dry contact switch input replication DO output: Relay output: AC 277V 10A DC 28V 10A Working environment :-20~65 0%RH-90%RH (non-condensation) Storage conditions :-20-80 0%RH-90%RH (non-condensation) Mounting method: Wall hanging Install. Color: As Shown Material: plastic Package Contents: 1 * Transmitter 2 * Receivers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.