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0.28 Inch Digital Display Ultra Small Digital DC Voltage Meter - Black
Technical parameters: 2 line working voltage: 4.0~40V (with reverse protection function) 2 line detection voltage: 0.0~40V 3 line working voltage: 4.0~40V (with reverse protection function) 3 line detection voltage: 0.0~100V Working current: <20mA Display mode: 0.28 "LED Size: 30 * 11.7 * 9.2 mm (length * width * height) Mounting hole: 23 * 10 mm The measurement rate: more than 200mS/ times Measuring accuracy: 3 per thousand Limit working condition: Low working voltage: +4.0V Maximum working voltage: +40V Working temperature: -10 ~ +65 Working humidity: 10 ~ 80% (no condensation) Working pressure: 80 ~ 106kPa No direct exposure to sunlight Main features: 1 product stability£¬ high accuracy 2 standard size£¬ easy to install 3 power supply with polarity protection circuit