4 Pack Mini Digital Voltmeter 0.28" LED Display DC 2.4-30V Measuring Range Two Wire Voltage Tester Reverse Polarity Protection Accurate Pressure Measurement

Specification: 4 x Mini Voltage Tester (Blue, Red, Green, Yellow) Measuring range: DC 2. 4-30V stable performance and high precision. When the voltage is less than 10V, the resolution is 0.01V. The voltage resolution above 10V is 0.1V, which ensures both measurement accuracy and higher voltage. Convenient and easy to install: small and lightweight. Reverse polarity protection and 2 wire digital voltmeter, easy to install and connect.