Features: Voltage tester is made of high quality materials, exquisite workmanship and long service life. Universally fits most for DC 12-24V Vehicles, for Cars, SUVs, Motorcycles, Bikes, Boats, Marine, etc. Easy to install,LED display, easy to read. Built in over current, over voltage and short circuit for protection, it well protects the whole circuit. While made of flame retardant PC for shell and good conductivity connecting pins, it is super sturdy and lasts for a long long for time. Timely grasp the state of battery voltage, voltage measurement purposes can also be used for other products. Specifications: Material:PC Color:Red,Blue,Green Input voltage: 12V-24V Output coltage:5V Operating temperature: -40 C to 80 C Diameter:3.7cm/1.46in Net Weight:38g Note: Please allow 1mm errors 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