The new 5V Relay Module
n5 V-12V to TTL control signal.
nThe control signal DC or AC, 220V AC load can be controlled.
nThere is a normally open and one normally closed contact.
nA power indicator light.
nA control indicator, pull off, disconnect does not shine.
nTransistor drives to increase the relay coil control pins high impedance.
nThe control pin has a pull-down circuit to prevent malfunction relay vacantly.
nEight Channel Relay Module.