What you will receive:2 Pcs Dc 12v waterproof led digital display voltage gauges round panel car voltmeters is about 37 X 41 X 29 mm / 1.5 X 1.6 X 1.1 Inches,with terminals waterproof voltmeter battery tester with blue light for boat marine car motorcycle Smart Alarm: when the voltage is too low, the buzzer warning light will light up and send out a buzzer alarm. lt will self-check at the moment of power on, prompting a buzzer, and low-voltage alarm is a continuous buzzer sound;When the voltage in the 12V mode is lower than 11V the voltage is intelligently measured, and a buzzer alarm will be issued when it is too low Multiple Protections: the 12v waterproof LED digital display voltage gauges are made of ABS and use flame retardant materials, which is durable and sturdy, waterproof; With reverse connection protection, can be applied to monitor the battery voltage, and timely grasp the state of your battery voltage to prevent failure; The terminals are applied to protect the power line and fuse overload durable waterproof: This car battery voltage meter is IP65 Waterproof, With waterproof design it can effectively prevent rainwater from entering and causing damage to the voltmeter Widely Applicable: the voltage gauge with terminals are suitable for most kinds of 12v voltage vehicles, such as cars, motorcycles, RVs, SUVs, off-road, ATVs, boats, marines, ships, trucks, tractors
Features:

How to use:
The LED voltage gauges are easy and convenient for you to use, you only need to use a hole opener to open the hole of your car, put the voltmeters into the hole, and then tighten it with a threaded fixing ring.

Clear display:
The round panel voltmeters are designed with 3 bits LED displays with blue light, which can help you keep abreast of the battery charge and discharge status in time and remind you to charge or replace.

Specifications:
Material: ABS
Color: as picture shown
Size: about 1.5 x 1.6 x 1.1 inches
Input voltage: 12 V
Voltage measurement range: 6-15 V
Battery measurement status: green-full battery; orange-half full battery; red-low battery

Package includes:
2 x Waterproof LED DC digital display voltmeters
4 x Insulated terminals

Warm notes:
Due to the differences in lighting and screen settings, the color of the items may be slightly different from the picture.
Due to different manual measurement methods, please allow slight size differences.