Product Name:BT37E04 4-Channel Bluetooth Relay Controller Module – iOS Android Wireless Remote Switch Board DC 5V/12V
Product Included:
1pcs 4CH DC 5V/12V IOS Android Bluetooth-Compatible Relay

Product parameters:

1 Working voltage: DC 5V/12V
2 Working current (DC 12V): standby 5MA, Bluetooth connection status 9MA, one relay on 38MA, two relays on 66MA, three relays on 93MA, four relays on 120MA
3 Bluetooth BLE 5.2
4 2.4GHz-2.48GHz unlicensed ISM band
5. Send commands through the Bluetooth APP to control the on and off of the relay (we provide Android Bluetooth APP, you can also use your own APP to control the relay, you can control it by sending simple commands), the adjustable distance: 10m without blocking.
6 Commands: Open, Close, Delay. The open and close commands can be modified.
7 Size: 63*74*19MM
8 Weight: 61.5 grams
9 Maximum load: 10A/250VAC, 10A/125VAC, 10A/30VDC, 10A/28VDC, 10A/12VDC

For more information, please contact me

Command (Format: String):

ON 1: AT+O1(can be modified)
OFF 1: AT+C1(can be modified)
Delay 1 : D1=XXXX(XXXX:0001~9999)

ON 2: AT+O2(can be modified)
OFF 2: AT+C2(can be modified)
Delay 2 : D2=XXXX(XXXX:0001~9999)

ON 3: AT+O3(can be modified)
OFF 3: AT+C3(can be modified)
Delay 3 : D3=XXXX(XXXX:0001~9999)

ON 4: AT+O4(can be modified)
OFF 4: AT+C4(can be modified)
Delay 4 : D4=XXXX(XXXX:0001~9999)