Weasch 2 Way 12V Wireless Remote Control Automotive Relay Kit, Standard 4-Pin SPST Car Relay for Off-Road Lights Horns Accessories

["【HEAVY DUTY PERFORMANCE】Engineered for demanding automotive applications. Each relay handles high continuous 40Amp current, ensuring safe and reliable power delivery to your 12V accessories. The compact 2-button remote allows you to control two separate circuits (one for each relay) effortlessly from inside or outside the vehicle","【BUILT-IN DIODE & ANTI-INTERFERENCE】Unlike basic relays, ours features an integrated printed circuit board (PCB) with a protective diode. This prevents voltage spikes from damaging sensitive vehicle electronics and ensures stable, long-distance remote signal reception without cross-talk","【LONG-RANGE CONTROL】Operating on a highly stable 433MHz frequency, it delivers robust anti-interference performance without cross-talk. Enjoy seamless wireless operation with an impressive remote range of up to 164ft in open areas","【CRUCIAL WIRING TIP FOR UPGRADES】When replacing an existing relay, the relay's receiver needs power to work. Option 1: Keep your original physical dash switch in the \"ON\" position to supply power to the relay, then use the remote to trigger the device. Option 2: For independent remote control, bypass the original switch to provide constant 12V power to the relay coil. (Not support the simultaneous operation of the power switch and remote control)","【LIMITLESS 12V APPLICATIONS】Go far beyond just off-road light bars. This wireless relay kit is the solution for upgrading 12V accessory. Perfect for Automotive (cooling fans, train horns, air compressors), RVs & Campers (water pumps, awning controls, exterior lighting), Marine Boats (bilge pumps, deck lights), and ATV/UTVs. Enjoy remote control without ever drilling through your firewall or running messy wires into the cabin"]