MODULE: ZT603-12V-A-T mini relay,12V,SPST, 4PINS, with Iron backrest, suitable for automobile used for control, alarms, horn, headlight and more.... Shape Dimensions(mm):28*28*25.5(+16) Switching Current: 30A 40A 60A Contact Arrangement:1A 1B 1C 1U Coil Voltage: 6VDC, 12VDC, 24VDC, 48VDC Layout (Bottom view):  Electrical Life: 10⁵ ops Wiring Diagram