1. Universal for: Motorbike Car / Boat / ATV / UTV / Camper / Caravans / Travel Trailer etc. 2. Twist-and-Lock system. Display: 3-bits, LED digital tube 3. It works for 12V-24V. Mini size and easy to install,work great for checking Voltage. 4. Mounts in a 1-1/8" hole in panels up, 0.25" thick, a nylon retaining nut holds the meter in place. 5. Used to monitor the storage-battery voltage, with reverse connection protection function, line will not be burnt.
