Linkhood Charger Voltmeter Cigarette Lighter Review

4 in 1 Design: Multifunctional switch panel comes with 1 x12v RV USB outlet, 1x LED digital display voltmeter, 1x 12V cigarette lighter outlet and 1x LED rocker toggle switch. Convenient for install and operate. Also detachable to replace other charger sockets or anything else that fits. Dual USB Charger Socket: This 12V USB socket is built-in dual USB charging ports, two ports output: 5V / 2.1A & 2.1A (total 4.2A), will auto-detect your devices and simultaneously charging 2 devices at optimal speed!. Real-Time LED Voltmeter: This switch panels for trucks with large digital voltmeter display that shows 9-24V voltage, you can monitor the condition of the battery on your car or boat that if the voltage is under normal status. LED diplay makes you easy find at night & check connect situation. All-round Protection: CE & ROHS certified. Featuring over current protection, over heat protection & over charge protection, Kohree waterproof car charger panel will automatically stop working when overloaded to prevent your devices from overheating & overcharging. Wide Compatibility: This switch panel can be widely used for DC 9-24V car, marine boat, RV, truck and charge your cellphone, iPad, iPhone, iPod, GPS, digital camera, or any other device.