ITEM NAME:Red LED Panel Display Digital Voltmeter Small 0.36 inch DC 0~~100V 12V Car B1T5 Red LED Panel Display Digital Voltmeter Small 0.36 inch DC 0~~100V 12V Car B1T5 Small in size and light in weight,quite easy and convenient to carry out 0.36 inch visible LED display, easy to read even in dim light It requires extra power supply of 3V to 30V; only has three-wires for simple connection With reversed connection protection, meaning it will not burn even when wires are connected reversely Has resolution of 0.1V and the potentiometer in the back side for accuracy adjustment COLOR:red&black Material:plastic Parameters: Measuring range:DC 0~100V Operating voltage:DC 3.0~30V Min input: DC 0V Max input: DC 100V Measurement accuracy:1 %(+/- 1 digit) Refresh Rate:about 200mS/times Operating Temperature:-10 Celsius ~ +65 Celsius Power consumption: 5-15mA in normal