Condition: and high quality This 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:DC0-100V Minimum Input:DC 0V Net weight:25g Material: plastic Colour: Red Maximum Input: DC100V Display way: 3 digits 0.36” LED nixie tube Refresh rate: 500mS/time Power supply: DC3.0-30V Working temperature: -10 Celsius degree ~ 65 Celsius degree Dimension: 23*15*10mm(without mounting plate) Cable length: . 14.5cm Installing size: 24*15mm Installing hole spacing: 28mm Screw specification: M2.0x12 Self-tapping screw (not included) Note: If you are not electrical and electronic professional, the electrotechnical instrument is not suitable to assemble by yourself. Package included: 5 x Digital Voltmeter Only 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.