AiTrip 4pcs Blue 028 Inch ThreeLine? 0100V LED Mini Digital DC Voltmeter Voltage Tester Meter

The Features of the product : It can be used both 2 line and 3 line for the Range DC DC0-100V It is the latest design comparing the condition ,can work directly in 5V, 9V, 12V, 24V and other Electric circuit, No voltage regulation required Equipped with three wires for easy access to the car / battery car / motorcycle internal circuit  Note : the highest Input voltage is 30V for 2 lines .or it will be a risk of burn Install hole size: 23 x 10.5mm 2 Lines Operating Voltage: 4.0-30V(with Reverse connection protection 2 lines detection voltage: 0.0~30V 3 Lines Operating Voltage: 4.0-40V(with Reverse connection protection 3 lines detection voltage: 0.0-100V  Limit working condition Low working voltage:2.4V High working voltage:40V Working current: <30mA Operating Temperature: 10±65 Celsius Working humidity: 10 ~ 80% (no condensation) Working pressure: 80 ~ 106kPa Speed ratio: about 200ms/time  Package Included: 4Pcs Mini Digital Voltmeter Blue