Wireless Communication: RF Support APP: No Channel: 8 Model Number: SHDC-8K Frequency: 433 MHz Customized support: Software reengineering Model Number: SHAC/DC-8 Max. Current: ≤10A Max. Voltage: DC9V-72V Frequency: 433.92MHz Output way: self-lock,interlock, inching Channel: 8 CH Encoded Mode: Learning code,Fixed code Material: plastic colour: As shown Package Contents: 1 x wireless remote control switch 1 x Controler 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.