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 2.4-30V.
3, wide voltage operation, the red minimum measurement voltage is 2.4V, the maximum safe pressure can reach 40V, more than 40V may be 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.
5. For other requirements or test range (three lines 0-500V), please contact customer service.
Measuring range Two-wire DC2.4~30V Three-wire DC0-100V
Power supply range No separate power supply. Measured voltage <40V higher than 40V may be damaged.
Test accuracy Accuracy calibrated with adjustable voltage resistor
Input impedance >50KΩ
Working current <30mA
Refresh rate is about 100mS
Display Specifications Three 0.36 LED Digital Tubes (Red)
Lead length default 20cm
Dimensions 35 x 23 x 20 mm
Mounting slot size 32 x 21 mm
Operating temperature -10 to +65 °C
Working humidity 10 ~ 80%
Working pressure 80 ~ 106kPa