1 Channel 5V Relay Module Low Level Trigger Relay Expansion Board

Product Description:
1, with power and relay action instructions, the light is bright, disconnected and not lit;
2. The control area and the load area have isolation slots;
3. Control DC or AC signal to control 220V AC load;
4, there is a normally open and a normally closed contact;
5. When there is a signal at the signal input end, the common end and the normally open end will be turned on;
6, can be used as a microcontroller development board module, can be used as home appliance control;
7. The blue KF301 terminal is more convenient to connect to the control line.