1. Anti-flame resistant nylon environmentally friendly materials. 2. The input voltage of the product is 12-24V, all trucks of 12-24V can be installed and used, and the scope of use is very wide. 3. The product is equipped with 2.4AUSB, which can be used for power supply of mobile phones, tablets and GPS. 4. The product is equipped with a voltmeter to detect the use of the car battery at any time to prevent safety accidents caused by poor battery. 5. The product has an ammeter to detect the output current of the USB port at any time. 6. Product distribution 60CM with OT terminal red and black wire, easy to install 7. Parameters: Product size: product head diameter: 3.7CM total length 5.4CM Opening size: 2.9CM Product material: environmentally friendly anti-flame retardant nylon material Product color: black Light color: blue Input voltage: DC12-24V Output voltage: 5V Output current: 2.4A Measurable voltage: 6-38V Measurable current: 0-3A Reverse protection: Yes Working temperature: -20~80 degrees Celsius Waterproof rating: IP66 Product accessories: delivery two blue terminals