20pcs 0.28 Inch Two-wire 2.5-30V Digital Green Display DC Voltmeter Adjustable Voltage Meter
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Feature:
1. The wiring of this voltmeter is simple. The conventional two wires are used, 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.
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 range
Two-wire DC2.50~32.0V
Power supply range
No need to supply power separately.
The measured voltage <40V, higher than 40V may be damaged.
Test accuracy
±1%. >10V error ±0.1V; <10V ±0.03V
Input resistance
>50KΩ
Working current
<30mA
Refresh rate
About 100mS once
Display specification
Three digit 0.28 LED digital tubes
Lead length
Default 20cm
Dimensions
30 x 11.5 x 9 mm
Hole Size
Pitch: 26mm Aperture: 2.4mm
Net weight
4g
Operating temperature
-10 to +80 °C
Working humidity
10 to 80%
Working pressure
80 to 106 kPa
Package includes:
20 x Voltage meter
