Feature: 1. 2 Channel Relay: The on board 2 channels relay module can be activated continuously for 100,000 times and have a long service life. 2. Short Response Time: Equipped with diode effusion protection, this relay has short response time to ensure real time remote control. 3. Main Application: Used to send instructions through the mobile phone АРР and control the switch of the relay on electronic equipment. 4. Light Indicator: Equipped with for Bluetooth status indicator and relay indicator, you can clearly see the status of the relay, which is convenient for subsequent debugging. 5. 10 Meters Distance: When carried on the cell phone, the maximum stable transmission distance can get to 10 meters, very convenient. 6. Advanced Technology: Contains 8 bit microcontroller chip and SPP C for Bluetooth 2.1 slave module, providing for Bluetooth relay control APP. Specification: Item Type: Relay Module Material: PCB Control Distance: 10M (Open Environment). Package List: 1 x Relay Module