12V 4 Channel Relay Module bluetooth Mobile Phone Wireless Remote Control Switch

Performance 1 Effective transmission distance 10M 2 The Mini51 series is a Cortex M0 32 bit microcontroller series which has high performance low power consumption and fast processing speed Features bluetooth remote control for mobile phones safe convenient fast simple low power consumption Parameter 1 Powered by 12V power supply output 12V 2 It needs its own external relay to function as a switch 3 Factory bluetooth device name is SPP CA It is best to have a unique name Password 1234 4 Modify the bluetooth device name fD 02 ef total length 1 byte all bytes later length device name n bytes up to 10 bytes length pairing password PIN up to 6 bytes 5d eg modify the device name QS RELAY pairing code is 1234 then send FD 02 EF 0F 08 51 53 2D 52 45 4C 41 59 04 31 32 33 34 5D Modified successfully df ff 00 00 5d modification failed no response df 00 00 00 5d First the APP sends the name of the device to be modified disconnects the bluetooth connection resets the bluetooth module after receiving the hardware delays for a few seconds and then configures the bluetooth device 4 way control code table 1 way open FD 02 20 01 01 5D1 way off FD 02 20 01 00 5D2 way open FD 02 20 02 01 5D2 way off FD 02 20 02 00 5D3 way open FD 02 20 03 01 5D3 way off FD 02 20 03 00 5D4 way open FD 02 20 04 01 5D 1 4 Road Open FD 02 20 EF FF 5D1 4 Road Off FD 02 20 EF 00 5D Return DF FD XX XX 5D XXXX A total of 16 bits each bit 1 means open