RC-400112-DN, Cole Hersee Heavy Duty Automotive Relay; 40A at 12V DC; Form C: SPDT with diode suppressor; Snap-in bracket supplied. These auto relays fit many vehicles. Typical applications include: lighting, starting, horn, heating and cooling. Standard ISO terminal footprint. Specifications: Ignition protected to SAE J1171 Pull-in voltage: 7.8V maximum at 12V DC, 15.6V at 24V DC. Release voltage: 1.2V minimum at 12V DC, 2.4V at 24V DC. Temperature range: -40°C to 85°C.