Products
Modbus RTU single relay module RS485/TTL UART 1 input 1 output with anti-reverse connection protection -73788
product detail
Product Parameter:
1. Onboard module: Onboard SPP_C Bluetooth-compatible serial slave module,
2. With wireless control function
3. Onboard relay: 12V, 10A/250V AC, 10A/30V DC relay, long relay life, can be continuously pulled in 100,000 times
4. Diode efflux protection: with diode efflux protection, short response time
5. On-board indicator: Bluetooth-compatible status indicator (slow flashing when not connected, long light after connection) and relay status indicator (lights up after closing)
6. Control distance: 10m (open environment)
7. Follow the specification: follow the Bluetooth-compatible 2.1 +EDR specification
8. Working voltage: DC 12V
9. DC control maximum voltage: DC 30V
10. Maximum voltage for AC control: AC 250V
1 Way Relay Mdoule
IN+: input positive
IN-: input negative
NC: Relay normally closed 0
N0: Relay normally open interface
COM: public
Open relay command: A0 01 01 A2 (sent in hexadecimal)
Close relay command: A0 01 00 A1 (sent in 16 hex)
2Way Relay Mdoule
IN+, IN-: 12V power input
TX, RX: UART serial port pins
EV, GND, SWIM, NRST: STM8S microcontroller program download port
LED D2 and D4 (red light): relay working indicator, light when open
LED D1 (blue light): blue light status indicator, slow flashing indicates waiting to establish connection with mobile phone, steady on indicates successful connection establishment with mobile phone
Two jumper caps are reserved: please plug to the right end during normal use (ie RX to RX1, TX to TX1). If you want to use the USB-TTL serial port module to debug the SPP-C module, please plug to the left end (otherwise Interfering)
COM1, COM2: public terminal