CMA57-S-DC12V-A-R-ZZ Auto Relay 12VDC 20A 4-Pin - 5 Pack, For Automotive Electrical Control Circuits

About This Product

Need a reliable relay for your car, truck, or other 12V project? This is a 5-pack of CMA57-S-DC12V-A-R-ZZ relays. They're 12-volt DC, 20-amp, 4-pin relays that are super common in automotive applications—think headlights, fog lights, horns, fans, or any circuit that needs a switch to handle higher current. They're compact and durable, so they'll fit in tight spaces and hold up under hood heat and vibration. The design is simple but effective: you send a low-current signal to the coil terminals, and it clicks to connect or disconnect the higher-current circuit on the other pins. Makes wiring safer and lets you control powerful devices with a small switch or even a computer. These are generic replacements, so they're versatile for cars, motorcycles, boats, DIY projects, or industrial control panels. Having a 5-pack is great for spares or multiple projects. Just make sure your voltage and amperage needs match (12V DC, up to 20A per relay). If you're into car audio, off-road lighting, or just fixing electrical gremlins, these relays are a must-have in your toolbox. Affordable, reliable, and gets the job done.