Features: The voltage tester is made of high-quality materials, with exquisite workmanship and a long lifespan. Universally fits most DC 12-24V vehicles, including cars, SUVs, motorcycles, bicycles, boats, marine, etc. Easy to install, with an LED display for easy reading. Built-in over-current, over-voltage, and short-circuit protection safeguards the entire circuit. Made with flame-retardant PC for the shell and good conductivity, it is super stable and built to last. Quickly grasp battery voltage; voltage measurement purposes can also be used for other products. Specifications: Material: PC Color: Red, Blue, Green Input Voltage: 12V-24V Output Voltage: 5V Operating Temperature: -40°C to 80°C Diameter: 3.7 cm / 1.46 inches Net Weight: 38g Note: Please allow 1mm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1x LED Ammeter Voltmeter