1PC Relay Module
5 V-12V to TTL control signal
The control signal DC or AC, 220V AC load can be controlled.
There is a normally open and one normally closed contact
Transistor drive to increase the relay coil control pins high impedance.
1, The new 5V Relay Module
2, Can be used as a microcontroller development board module can be used as home appliance control
3, A power indicator light
4, A control indicator, pull off, disconnect does not shine
5, The control pin has a pull-down circuit to prevent malfunction relay vacantly