Features 1. 12 Volt 40 amp 5-prong relays 2. Mechanical life of 10,000+ cycles 3. Heavy-duty impact molded relay socket with 5 wires 4. High 40A coil capacity able to handle high current applications with ease 5. Hundreds of uses include: starter kills, domelight supervision, trunk release, polarity change, power door lock/actuator control, converting low current output to high current, adding ignition/accessory outputs, controlling motors and other electronics; also suitable for automobile control, alarms, horn, headlight, and more Specifications - New heavy-duty SPDT relays - 12 Volt 40 amp 5-prong relays - Mechanical life of 10,000+ cycles - Heavy-duty impact molded relay socket with 5 wires - Interlocking relay sockets - High 40A coil capacity able to handle high current applications with ease Package Includes - 5 x 40A Relay (5Pin) - 5 x Relay Socket Wire