- 12V battery disconnect switch with wireless remote control. Prevents battery drain during long parking, lights left on, or wiring aging to protect battery life. - Auto protection and energy saving: when battery voltage drops to 11.8V, the switch cuts power after 120 seconds to conserve energy. If voltage rises above 13.3V (such as while driving and charging), remote control is disabled and the switch must be used manually. - Easy installation: connects to the negative terminal for a simple, stable setup with wireless control. Power off before wiring and perform an ignition test after installation. - Wide compatibility: suitable for most 12V vehicles, including cars, motorhomes/RVs, caravans, boats, trucks, and motorcycles under 4.0L displacement. - Key benefits: reduces parasitic drain, preserves battery health, and provides convenient remote operation with a compact form factor. - Practical use scenarios: long-term parking at home to prevent battery drain; off-season storage of an RV or caravan; keeping a boat ready while docked.