Feature: new and high quality 4 pin relay and a single pole Main contacts are valued at a maximum of 40 amperes to 12 V DC Suitable for car alarm , audio Installer, electrician automotive and DIY use. Name: Repeater relay Contact rating: 40A Nominal coil voltage: 12V Contact material: Silver-cadmium oxide as standard Operation time: 10ms maximum Trip time: 10ms maximum Temperature range: -40 degree to 85 degree Material: plastic colour: Black Package Contents: 1 x Repeater 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.