Features 1.Using high-quality materials, durable, long service life, can be continuously sucked 100,000 times 2.The bluetooth module has wireless control function, convenient to control and operate 3.With diode effusion protection, short response time and not easy to damage 4.Contains 1 channel 5V/10A relay module and SPP‑C Bluetooth serial port slave module, which can control the switch of the relay by sending instructions through the mobile phone APP 5.Professional design and reasonable structure, the connecting part has good contact performance Specification Item Type: Bluetooth Module Material: PCB Control Distance: Approx. 10 meters / 32.8ft(open environment) Working Voltage: DC 5V DC Control Maximum Voltage: DC 30V AC Control Maximum Voltage: AC 250V Purpose: Includes 1 channel 5V/10A relay module and SPP-C Bluetooth serial port slave module, which can control the switch of the relay by sending instructions through the mobile phone APP Package List 1 x Bluetooth Module