1. The wiring of this voltmeter is simple. The two wires are used regularly. The red is connected to the positive, the black is
connected to the negative, and the reverse connection is protected.
2. Normally, no external working power supply is needed, and the measuring voltage can be directly operated. The measuring voltage range is 4-30V.
3, wide voltage operation, the red minimum measurement voltage is 4V, the maximum safe pressure can reach 40V, more than 40V maybe damaged.
4. When measuring voltage below 10V, two digits are displayed after the decimal point; when measuring voltage above 10V, one digit is displayed after the decimal point.
Measuring range Second line DC4~32V
Power supply range No separate power supply. Measured voltage <40V higher than 40V may be damaged.
Test accuracy ±1% >10V error positive and negative 0.2V <10V positive and negative 0.03V
Input impedance >50KΩ
Working current <30mA
Refresh rate is about 100mS
Display Specifications Three 0.36LED digital tubes (red, blue, green, )
Lead length default 15cm
Dimensions 33 x 15 x 10 mm
Opening size Pitch: 28mm Aperture: 2.8mm
Operating temperature -10 to +65 °C
Working humidity 10 ~ 80%
Working pressure 80 ~ 106kPa