DROK Waterproof Monitor 12 Volt Battery Meter 3.0-30V DC Auto Gauge Small Digital Voltmeter Blue LED
Features:Dimensions: 50 x 30 x 27mmCutting Size: 46x27mmMeasure range: DC 3.0-30.0VMinimum input: DC 3.0VMaximum input: DC 30VPermissible Error: 1% (+ / - 1 digit)Display: three 0.40" LED digital tubeDisplay Color: BlueRefresh rate: about 500mSCurrent consumption: about 5-20mAOperating temperature: -10 c ~ 65 cVoltmeter with epoxy potting, Full waterproof design, Oil Pollution Prevention, Moistureproof, Shockproof, Dust-proofWith Reverse polarity protectionPlease Note:Do not need power supply, can measure 2.5-30V directlyIf the input voltage is below 3.5V, the display brightness dimsIf the input voltage is below 2.5V,measuring inaccurate or no displayIf measure 10V below, accurate to 0.01V,display x.xxIf measure 10V or more,accurate to 0.1V,display xx.xPackage Include:1x Digital Voltmeter