Auto Battery Master Switch With Remote, 240A Kill Switch, 12V LED Display

Auto Battery Master Switch With Remote, 240A Kill Switch, 12V LED Display is your reliable safeguard against parasitic battery drain, accidental power loss, and vehicle tampering. This high-capacity master switch combines a robust 250A rated switch, convenient RF remote control, and a clear 12V LED display to give you quick, accurate control over your vehicle’s electrical system.

Designed for versatility, it supports both 12V and 24V vehicle systems and operates over a wide voltage range of 6–30V DC. The unit handles substantial current surges with an instantaneous switching capability of up to 500A, making it suitable for most automotive and light commercial applications. Its compact design is built from durable ABS with copper contacts, and it carries CE certification for EU markets.

The integrated remote control (433.92 MHz) provides convenient, hands-free power management, while the indicator displays ON and OFF status so you always know the exact state of the circuit. With ultra-low standby power consumption of 700 µA, it minimizes battery drain when the vehicle is parked. Automatic protection features include a defective-threshold alarm and automatic battery disconnect to help prevent deep discharge and protect the battery health over time.

Whether you’re retrofitting a personal vehicle or outfitting a fleet, this master switch delivers reliable performance in a compact form factor. It’s built to withstand harsh conditions (operating from -20°C to +100°C) and is designed to protect your battery with precise voltage thresholds and protective delays. All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Trust and reliability matter. Providing quality and trusted service since 2002 at intercyprus.com.

Benefits & Tips

• Quickly cut vehicle power to protect the battery when parked for extended periods or during maintenance.
• Use the remote to prevent unauthorized draw from the battery while away from the vehicle or during storage.
• Ideal for fleets: manage battery health across multiple vehicles with clear ON/OFF status via the LED display.

Product specifications

• Operating voltage range: 6–30V DC
• Vehicle system support: Adaptive for 12V and 24V vehicle systems
• Protection: Automatic alarm of defective threshold and automatic battery disconnect
• Frequency: 433.92 MHz
• Indicator display: ON and OFF
• Standby current: 700 µA
• Switch current (rated/instantaneous): 250A / 500A
• Loss protection threshold: 11.8 V ±0.2 (12V system) / 23.0 V ±0.2 (24V system)
• Power loss delay: Alarm after 60 seconds; automatic disconnect after 120 seconds
• Operating temperature: -20°C to +100°C
• Weight: 0.43 kg
• Materials: ABS, copper
• Origin: Mainland China
• Remote control: RF, 433.92 MHz with self-locking mode

Package includes:

• Auto Battery Master Switch with Remote

Warnings/Reminders

• Remote control matching instructions: Interlock mode requires you to press and hold the manual ON key for 3 seconds to enter learning mode, then press the remote ON key to complete pairing (indicator flashes to confirm). If no signal is received within 30 seconds, the learning state exits automatically.
• Do not drive with the remote engaged in a way that may cause unintended power loss. If voltage rises above the safe thresholds (13.3 V for 12V systems / 26.2 V for 24V systems), the RF remote control may fail to prevent undesired power-off.
• The system uses voltage self-identification: 12V systems identify in the 6–18V range; 24V systems identify in the 18–30V range.
• Voltage range guidance and protective behavior: If battery voltage is high, the system may trip; if voltage is low, the device enters ignition misfire protection states. The device has a maximum protection threshold of 11.8 V (12V) or 23.2 V (24V) with a 60-second alarm before 120 seconds of automatic disconnection.
• Supply voltage below 6V or more than 3V (per notes) will cause automatic shutdown and disconnection to protect the battery.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Trusted by customers since 2002 — reliability you can count on at intercyprus.com.