DROK® Small Little DC Digital Voltmeter 2-Wire 0.56" DC 3-30V Blue Bright LED Car Motor Panel Mount Voltage Meter 5V 12V 24V 27V Solar Battery Volt Accurate Power Monitor Gauge

Parameters:
Dimensions: 48mm x 29mm x 22mm
Cutting size : 46mm x 27mm
Measure voltage: DC 3-30V (two wires Access)
Input Polarity: DC voltage
Measurement precision:0.01V(3-10V); 0.1V (10-30V)
Display: Three 0.56" digital LED Tube
Display Color: Blue
Refresh rate: about 200mS / times
Operating temperature: -10°c to 65°c

Features:
1. Safe to use: With reversed connection protection, this item will not burn even when connected reversely , but its screen will display nothing
2. Easy to connect wires: It has only two wires(the red and the black),simply connect the red to positive and black to the negative
3. High accuracy: Its decimal point will automatically move, meaning there is one digit after the decimal point when the voltage is higher than 10V, and 2 digits after the decimal point when the voltage lower than 10V,which allows more accurate display
4. Good-quality material: Its strong plastic case prevents it from easily damaged by outer force.ï¼›more, high-quality LED is adapted in this item, which is bright even in dim light

Wiring connection:
Red wire: connect to input positive pole
Black wire: connect to input negative pole

Potentiometer usage:
You should adjust the potentiometer when your input voltage is about 20V. Please use a screwdriver to adjust the potentiometer to meet your requirements.

Applications:
You can use this meter to monitor voltage or battery of cars, vehicles, sailboat, RV, truck, race car, automotive, etc.

Package Includes:
1x Digital LED Voltmeter