Product Parameters Onboard STM8S high-performance MCU and SPP-C Bluetooth 2.1 serial port slave module Bluetooth relay control APP is provided Onboard Bluetooth status indicator and relay indicator The UART debugging interface and STM8 SWIM program download interface are reserved Control distance: 10m (open environment) Operating voltage: DC 12V Maximum DC control voltage: DC 30V Maximum AC control voltage: AC 250V Interface introduction IN+ and IN-: 12V power input TX, RX: UART serial port pins 5V, GND, SWIM, NRST: single chip computer program download port LED D2 and D4 (red): Relay operating indicator light, on when turned on LED D1 (blue light): Bluetooth status indicator, Slow blinking indicates waiting for the connection to be established with the mobile phone, When it is steady on, the connection is successfully established Reserved two jumper caps: RX, RX1,TX, TX1 in normal use. If you want to debug the SPP-C module using the USB to TTL serial port module alone, please insert them to the left end COM: common terminal NC: normally closed end, the relay is short connected with COM before suction, and suspended after suction NO: normally start, the relay is suspended before closing, and short connected with COM after closing Relay control instruction (hex) : Turn on the first relay: A0 01 01 A2 Turn off the first relay: A0 01 00 A1 Turn on the second relay: A0 02 01 A3 Turn off the second relay: A0 02 00 A2

On-board 8-circuit 12V, 10A/250V AC 10A/30V DC relay, capable of continuous closing for 100000 times, with diode leakage protection and short response time. Two types of APP are optional, which can be downloaded and controlled wirelessly, and are dedicated to Bluetooth relay; General APP downloaded from Android App Mall. Mobile APP is connected to Bluetooth control. Mobile APP is easy to configure and operate. Realize wireless control of mobile phone, switch on and off anytime and anywhere. In the open environment, the maximum stable transmission distance of the mobile phone when it is carried on the Bluetooth module is 10m.