3pcs 0.28 Inch Three-wire 0-100V Digital Red Display DC Voltmeter Adjustable Voltage Meter

Feature: 1. The wiring of this voltmeter is simple. The conventional two wires are, the red is connected to the positive, the black is connected to the negative, and the reverse connection is protected. 2. Conventionally, no external working power supply is required, and the measuring voltage can be directly operated. The measuring voltage range is two-wire 2.50 -30V, three-wire 100V. 3. Wide voltage operation, red 2.50V low and safe pressure up to 40V, more than 40V may be damaged. 4. When measuring voltages below 10V, two digits are displayed after the decimal point; when measuring voltages above 10V, one digit is displayed after the decimal point. Measuring rangeTwo-wire DC 2.50 ~ 32.0V / three-wire DC0-100V / 500VPower supply rangeNo need to supply power separately. The measured voltage <40V, higher than 40V may be damaged.Test accuracy±1%. > 10V error ± 0.1V; <10V ±0.03VInput resistance> 50KΩ Working current<30mARefresh rateAbout 100mS onceDisplay specificationThree digit 0.28 LED digital tubesLead lengthDefault 20cmDimensions30 x 11.5 x 9 mmHole
SizePitch: 26mm
Aperture: 2.4 mmNet weight4gOperating temperature-10 to +80 °CWorking humidity10 to 80%Working pressure80 to 106 kPaPackage includes: 3 x Voltage meter