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Monitor Battery Meter 2.5-30V DC Auto Gauge Small Digital Voltmeter
Features: Digital voltmeter with epoxy potting. Full waterproof design£¬ oil pollution prevention£¬ moisture proof£¬ Shockproof and dust-proof. It only has two wires£¬ you can connect to the measure power directly. With reverse polarity protection. Minimum input: DC2.5 Maximum Input: DC30V (Please do not exceed 30V£¬ otherwise£¬ the meter would be damaged). No need of power supply. Specifications: Measure range: DC 2.5-30.0V Maximum input: DC 30V Permissible Error: 1% (+ / - 1 digit) Display: three 0.40" LED digital tube Display Color: Red (DC 2.5-30.0V) Refresh rate: about 500ms Current consumption: about 5-20mA Operating temperature: -10 °c ~ 65 °c Note: Do not need power supply£¬ can measure 2.5-30V directly. If the input voltage is below 3.5V£¬ the display brightness dims. If the input voltage is below 2.5V£¬ measuring inaccurate or no display. when measure 10V below£¬ accurate to 0.01V£¬display x.xx. when measure 10V or more£¬ accurate to 0.1V£¬ display xx.x.