[STURDY AND ] Remote battery disconnect switch made of material shell and pure copper wire, better contact, long service life, more than 5000 times, can extend car battery life by 2-3 times. [MORE CONVENIENT] The wireless remote control battery disconnect switch allows you not to open the hood every time to turn on the power, just the remote control button to disconnect your car power system, saving you a lot of time and hassle, and the remote control improves safety. [EASY INSTALLATION] No modifications needed! Step 1: Remove the negative power line of the vehicle. : Fix the negative power line to the relay. Step 3: Fix the relay to the negative pole of the battery. Step 4: Connect the red wire to the positive pole of the battery. 12V battery disconnect switch allows you not to open the hood every time for turn on the power, just the remote control key button to disconnect your car power system, saving you plenty of time. [BETTER SECURITY] Kill switch anti theft, any power draw from the battery when vehicle is not in use, disconnects the battery safely and save the car from being stolen.provide a reliable way to shutdown electrical power during and protect batteries from excessive drain,No power leakage anymore. [WIDELY APPLICATION] the battery is small and space-saving. 100A rated current - kill switch suitable for any displacement car, motorcycle, boat, , travel trailer, truck, and other engine applications with a 12 volt battery Name: Disconnection Applicable vehicle type: Car Colour:Black Material:Plastic Package Contents: 2 set x Disconnection 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.