Feature: 1. Black shell, LED indicator light, exquisite workmanship, making it looks fashionable and nice-looking. 2. 12-24V input voltage, widely used, can be installed and used for all 12-24V car and boats. 3. Equipped with 2.4A USB, it can supply power for mobile phone, tablet, GPS, etc. 4. With voltage meter, it can detect the use of car battery at any time, prevent the safety accident caused by bad battery. 5. With current meter, allows you check the output current of USB port at any time. 6. Precision manufacturing makes it has stable performance and long service life. Specification: Condition: 100% Brand New Item Type: Car Digital Display Optional Color: Blue, Red, Green Hole Size: Approx. 2.9cm/1.1in Cable Length: Approx. 60cm/23.6in Product Material: ABS Product Color: Black Input Voltage: DC 12-24V Output Voltage : 5V Output Current : 2.4A Measurable Voltage: 6-38V Measurable Current: 0-3A Reverse Connection Protection : Yes Operating Temperature: -20℃- 80℃ Waterproof Grade: IP66 Installation: Can be installed in motorcycles, car, ships, yachts, RV, bus and other large transport tools Application: It can be used to power mobile phones, tablets, navigation and GPS devices; Detect battery voltage at any time; Detect the electric current at any time. Wiring: The red wire is connected to the positive pole of the power supply, and the black wire is connected to the negative pole of the power supply.es Operating Temperature: -20℃- 80℃ Waterproof Grade: IP66 Installation: Can be installed in motorcycles, car, ships, yachts, RV, bus and other large transport tools Application: It can be used to power mobile phones, tablets, navigation and GPS devices; Detect battery voltage at any time; Detect the electric current at any time. Wiring: The red wire is connected to the positive pole of the power supply, and the black wire is connected to the negative pole of the power supply. Package List: 1 x Car Digital Display1 x 23.6in Cable