Car Digital Voltmeter 52mm 2 Inch LED Display for 12V Vehicles Battery Voltage Monitoring 8 18V Features： 1、Accurate Monitoring: The car voltmeter accurately tracks 8-18V car voltage, maintaining the proper voltage prevents overcharging or overdischarging of the battery, which helps to prolong the life of the battery. 2、Improved Safety: 52mm car voltage gauge detects abnormal voltage conditions in time, reducing the risk of battery explosion or fire and improving driving safety. 3、Convenient: By monitoring the voltage, it ensures that electrical devices (such as lights, stereo, etc.) are operating at the optimal voltage, improving overall performance. 4、Easy Installation: 52mm car voltage meter offers a easy installation process. Taking only a few minutes to install, it ensures convenience and quick utility for the user. 5、High Durability: The car volt gauge is built from ABS material, ensuring high durability and a long service life, making it a ideal tool for consistent use. Specification： Item Type: Car?Digital Voltmeter Material: ABS Diameter: 52mm / 2in Voltage: DC (8-18V) Fitment: For all cars with DC12V circuit system Package List： 1 x?Car?Digital Voltmeter 1 x Wiring Harness 1 x User Manual