Features: <br>1. Made of high quality material, durable and long service life. <br>2. This accuracy voltmeter has a "core" of 0.025% resolution to make sure sufficient margin, it has high accuracy <br>3. No need to supply power separately, use the power supply under test directly <br>4. Low startup voltage, blue shows a minimum of 3.0V <br>5. It has reverse connection protecting function and will not burn when connected. <br> <br>Specification: <br> <br>Measuring Range: DC3.0-30.0V <br>Power Supply Range: No Need to Supply Power Separately, Use the Power Supply Under Test Directly <br>Allowable Error: 0.1% <br>Input Impedance > 100K Ohms <br>Operating Current: < 18mA <br>Refresh Rate: About 300ms Once <br>Display Mode: Three 0.36'' LED Digital Tube <br>Lead Length: Approx. 15cm / 5.9in <br>Size: Approx. 23 * 15 * 10mm / 0.9 * 0.6 * 0.4in(length x width x thickness) (Without Mounting Ears); With Mounting Ears Length: 33mm <br>Mounting Hole Spacing: 28mm, Aperture: 2.8mm <br>Working Temperature: -10℃- 65℃ <br> <br>Package List: <br>5 * Digital Display Voltage Gauges<br>1、Made of high quality material, durable and long service life. <br>2、This accuracy voltmeter has a “core” of 0.025% resolution to make sure sufficient margin, it has high accuracy <br>3、No need to supply power separately, use the power supply under test directly <br>4、Low startup voltage, blue shows a minimum of 3.0V <br>5、It has reverse connection protecting function and will not burn when connected. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.