Features: 1.LED toggle switch, allows you to control the electrical equipment in the car at will. 0?24V voltage display, real?time monitoring of vehicle voltage. 2.Dual USB ports can meet your various charging needs, allowing to charge for iOS/for Android phones, GPS navigators, cameras, etc. 3.With output short?circuit protection and overload protection, ?25?80 temperature range . The electrical life at full load reaches 50,000 times. 4.Easy to install, can be installed horizontally or vertically. Stainless steel screws and labels, suitable for 12V and 24V system panel pre?wiring. 5.High?quality ABS and aluminum panel, fireproof, durable and waterproof. Equipped with special rubber steel cap, splashproof panel and anti?leakage rubber ring, there is no need to worry about water when using it on a ship. Specification: Item Type: Rocker Switch Panel Material: ABS + Aluminum Panel Color: Black Features: USB, voltmeter, switch blue light Working Temperature: -25-80 Maximum Power: 240W Input Voltage: DC12V/24V Output Voltage: 5V USB Output Voltage Meter: 5V 2.1A Output Current: 3.1A 10A 20A Protection Level: IP65 Voltmeter Detection Range: 6-30V Uses: Can be used as headlight switch, fog light switch, wide-view light switch, car refrigerator switch, car vacuum cleaner switch, Application: Suitable for high-end large-scale transportation tools such as automobiles, ships, yachts, RVs, buses, etc. Wiring Instructions: Red: Positive pole Black: Negative pole Installation Instructions: Directly replacement