Specification: Colour: Black Voltage: 12V Current: 40A Contact Type: SPST Material: Metal, Plastic Pin Number: 4 Pin Note: The contacts on this relay are normally open (NO) Features: - New - SPST contact type - Durable - 12V DC rated voltage - Used when a device draws heavy amperage such as car alarms, remote starts, HID headlights, pop doors, trunk releases, strobe lights, fog lights, stereos, fans, air horns, and more Notes: 1. Please check the size measurement chart carefully before making payment. 2. Please allow 0.51 inch difference due to manual measurement (1 inch = 2.54 cm). 3. The color of the actual items may vary slightly from the listing images due to different monitor settings. 4. Instructions are not included. Package included: 1 x Car Relay with Socket