ITEM NAME:Mini Digital Voltmeter DC0-100V Blue Light LED Panel Voltage Meter Product Description Description: 100% Brand new 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. Note: If you are not electrical and electronic professional, the electrotechnical instrument is not suitable for you to assemble by yourself. Measuring range: DC0-100V Minimum Input DC 0V Maximum Input DC100V Permissible Error 1% (+/- 1 digit) Display way 3 digits 0.36†LED nixie tube Display color Blue 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 Approx. 14.5cm Installing size 24*15mm Installing hole spacing 28mm Screw specification M2.0x12 Self-tapping screw (not included) Net weight 5g Gross weight 8g (with package) Included: 1 x Digital Voltmeter.3 digits 0.36†LED nixie tube. Working temperature. 23 15 10mm(without mounting plate). Display way. Cable length. Display color. Net weight. Gross weight.