3pcs/lot 2 channel relay modules relay kit control panel PLC 5V &4 channel relay 8 channel

Product introduction The new 5V Relay Module Can be used as microcontroller development board module can be used as home appliance control 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 A power indicator light A control indicator, pull off, disconnect does not shine Transistor drive to increase the relay coil control pins high impedance.