Wiring description: 3, 4, normally open contacts; 1, 2, normally closed contact ; 5,6, public points; 7,8, the coil voltage contact of the relay. For example: 1,3,5 This contact, 3 and 5 are normally open, 1 and 5 are normally closed. 8 Terminals, 2PDT 2NO 2NC type.This Relay Exquisite workmanship ,Quality assurance for 1 years. If there are quality problems within 1 years, you can send us email. We will send you new ones .Features: 8 pins DPDT, with coil voltage AC 110V, contact capacity AC 30A 250V and DC 30A 28V. The JQX-12F 2Z 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.