5-Pin SPDT (Single Pole Double Throw) Relay 40A/30A High Switching Capability. Pin Specifications: Ground (85), (30), Trigger (86), Output (87a), and Output (87). 100pc Included 5 pin SPDT 12V, 30/40 Amp electrical relay. This relay has a universal application and can be used in automotive setups, car sound systems, security systems, and other applications. Comes with mounting tab for easy installation. Interchangeable/Compatible with: All automobiles and devices equipped with a 12 Volt DC power source. Colour: Black Material: ABS + metal Size: 28 x 28 x 25mm Package Contents: 100 x Relay Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.