Features: This product is a car start relay with wide application, used for small crane, wheat combine harvester, auto start power switch, auto preheat relay Operating within 30 minutes at a time of 4.8W, 2.4W can work for a long time The relay is normally open, and 4-pin relay type, and rated current is 100A, rated voltage is 12VDC Adopts of copper terminal has good electrical conductivity, and great stable working performance Convenient to replace the broken one, and modify the car Specifications: Contact form: normally open Rated current: 100A Rated voltage: 12VDC Lead out: terminal Pin number: 4 Size: 4.3*4.5*8cm/1.7*1.8*3.1in Weight: Approx.92g/3.2oz Wiring method: small pins: control voltage, large pins: load Package included: 1 x Relay