Relay contacts : Terminals 1 and 2 N/C Normally Closed ; Terminals 3 and 4 N/O Normally Open ; Terminals 5 and 6 public points ； Terminals 7 and 8 Relay Coil Voltage. General Purpose Relay can adjust automatically, protect and transform the electric circuit. Widely used in the remote control, communication, automatic control system, electronic equipment, etc.