20pcs 2 Wires Digital Voltmeter 2.5V-40V Digital Voltage Tester LED Display Panel Voltmeter

20pcs 2 Wires Digital Voltmeter 2.5V-40V Digital Voltage Tester LED Display Panel Voltmeter leírása

1. The voltmeter has simple wiring. It usually uses two wires, red for positive and black for negative. It has reverse connection protection, so it won't burn if connected in reverse.
2. It doesn't need an external power supply. It can work directly with the measuring voltage. The measuring voltage range is 2.4V-32V for two lines.
3. It works with a wide voltage. The minimum measuring voltage of red is 2.4V, and the maximum safe pressure can reach 40V. It may be damaged if it exceeds 40V.
4. When measuring voltage below 10V, two decimal places are displayed; when measuring voltage above 10V, one decimal place is displayed.

Measuring range: Two-wire DC2.4-32V
Power supply range: No need for separate power supply Test voltage
Test accuracy: 1% Greater than 10V error or minus 0.2V Less than 10V or minus 0.03V
Input impedance: Greater than 50KΩ
Working current: Less than 30mA
Refresh rate: About 100mS once
Display specifications: Three-digit 0.36LED digital tube
Lead length: Default 15cm
Opening size: Hole spacing: 28mm Aperture: 2.8mm
Working temperature: -10 - +65
Working humidity: 10%- 80%
Working air pressure:80kPa- 106kPa
Note:
Installation guide not included, we strongly recommend you seek professional installation.
Please check as much as possible to make sure the item is what you need.
Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use
Colour:Photo Color
Material:plastic

Package Contents:
20 x Digital Voltmeter