Specifications: 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. Operational life: Electrical to 100,000 cycles; Mechanical to 10 million cycles. Contact Material: Silver alloy. dielectric strength. : 500V rms between coil and contact. Insulation resistance: 100M? minimum (500V DC). Vibration resistance: 10-40Hz double amplitude 1.5mm. Ignition protected to SAE J1171, Section 5.