DC4V-100V Voltmeter, LED Digital Waterproof Round 2-Wire Battery Gauge Mini Voltage Display Tester for Cars, Motorcycles, ATVs, Boats, Trucks, Marine Battery Monitors（Blue）
Specification: 1. Minimum Starting Voltage: 3.8V2. Refresh Speed: 300mS/time3.
Display: Blue LED4. Measuring Range: 4V to 100V DC5. Package Includes：2 x Mini
Car Voltmeter
 
Product Features
  

         
Universal Voltage MonitoringThis versatile car digital voltmeter gauge is designed to monitor battery conditions across a wide range of DC voltages from 4 to 100V. Caution: Exceeding 100V can result in irreversible damage to the instrument. The voltmeter is active from a minimum starting voltage of 3.8V.
         
Instant Voltage ReadoutEquipped with a 3-digit LED display and large, clear digits, this digital volt gauge provides real-time monitoring of your battery voltage. The ultra-thin, frosted display surface ensures readability, with a refresh speed of 300 milliseconds per update.
         
Easy Installation with ProtectionThe 12V motorcycle voltmeter features a 30mm opening diameter for simple and labor-saving installation. It comes with two detachable wires: red for positive and black for negative terminals. The voltmeter includes reverse connection protection, preventing damage in case of terminal reversal, though it will not display readings in such an event.
         
Broad CompatibilityThis voltmeter is widely applicable across various vehicles and equipment, including cars, recreational vehicles (RVs), SUVs, off-road vehicles, boats, marine crafts, motorcycles, bicycles, substation automation systems, distribution automation systems, test equipment, voltage regulators, and more.