Small in size and light in weight,quite easy and convenient to carry out0.36 inch visible LED display, easy to read even in dim lightIt requires extra power supply of 3V to 30V; only has three-wires for simple connectionWith reversed connection protection, meaning it will not burn even when wires are connected reverselyHas resolution of 0.1V and the potentiometer in the back side for accuracy adjustmentCOLOR:red&blackMaterial:plasticParameters:Measuring range:DC 0~100VOperating voltage:DC 3.0~30VMin input: DC 0VMax input: DC 100VMeasurement accuracy:1 %(+/- 1 digit)Refresh Rate:about 200mS/timesOperating Temperature:-10 Celsius ~ +65 CelsiusPower consumption: 5-15mA in normal conditionDisplay Color:RedCutting size:23x15x10mmMounting holes distance:28mmWiring:Red: Power Supply +,(3.0~ 30V DC)White: Measure Voltage +,0~ 100V DC)Black: Power Supply -, Measure Voltage -Note:1.The meter requires extra power supply of DC 3.0 to 30V2.Its resolution is 0.1V and its actual error might larger than 0.1VPackage Include:2x Digital Panel VoltmeterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.