1、The wireless remote control switch can control lamps or other household appliances through the remote control, which is convenient and practical. 2、Smart relay switch has the characteristics of long control distance, high sensitivity, strong anti‑interference, and good stability. 3、The wireless remote control has excellent stability, and the relay module provides high signal sensitivity and anti-interference at a lower cost. 4、This remote control switch is more flexible. The relay switch adopts non-directional wireless coding technology, which can be controlled independently without mutual interference. 5、Wider application, be used in industrial control and security fields, such as lights, motors, remote controls, wireless security alarms, wireless access alarms, wireless controllers, etc. 1 x Receiver1 x Remote Control1 x Anti-Lost Button Item Type: Wireless Remote Control RelayModel: AK-220-119Material: PCBInput and Output Voltage: 220VWorking Frequency: 433MZHReceiver Sensitivity: -105dBWorking Temperature: -10℃-+60℃Output Mode: InstantaneousCode Type: Learning CodeOutput Status: Adjusted by the Jumper on the Receiving BoardRemote Control Distance: Approx.10-30m/ 32.8- 98.4ftRemote Control Built-In Battery: 27A 30mAh x 1 (Delivered with Battery)