Intelligent 12 V car battery isolator switch with remote control for voltage based protection Key specs - Operating temperature: 30–90 C - Standby current: 3 mA - Rated current: 240 A - Rated voltage: 12 V - Cut-off threshold: 11.8 V ± 0.2 V - Peak current: 500 A - Package includes: 1 x isolator switch, 2 x wireless remotes, 1 x English user manual Smart protection and control - When voltage falls below 11.8 V, the remote switch auto shuts after 120 seconds to save energy - When voltage rises above 13.2 V, the remote is disabled to prevent accidental shutdown while driving; manual control remains available Installation and fit - Connect to the negative battery post for stable performance - Please turn off power before installation - Suitable for negative posts of 9–13 mm and 15–17 mm; not compatible with small pole heads - Switch dimensions: 83 mm x 60 mm x 35 mm Battery protection and longevity - Prevents battery discharge during long parking, aging cables, or forgotten lights - Maximizes energy storage, protects the battery, and extends service life Use scenarios - Seasonal vehicles or cars stored for extended periods to avoid parasitic drain - Vehicles with aging wiring or high parasitic loads needing reliable shutoff control - Fleet or multi-vehicle setups for secure, programmable shutdown and reset options