Condition: and high qualityThis mini digital LED voltmeter DC0-100V adopt 0.36inch digital display and ultra mini size with three wires, which designed with reverse connect protection function and used for all kinds of voltage measurement purposes.Measuring range:DC0-100VMinimum Input:DC 0VNet weight:5g/pcsMaterial: plasticColour: RedMaximum Input:DC100VDisplay way:3 digits 0.36 LED nixie tubeRefresh rate:500mS/time supply:DC3.0-30VWorking temperature:-10 Celsius degree ~ 65 Celsius degreeDimension:23*15*10mm(without mounting plate)Cable length:Approx. 14.5cmInstalling size:24*15mmInstalling hole spacing:28mmScrew specification:M2.0x12 Self-tapping screw (not included)Note: If you are not electrical and electronic , the electrotechnical instrument is not suitable for you to assemble by yourself.Package Included:3 x Digital VoltmeterOnly the above package content, other products are not included.Note: Light reflection 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.