Description:
1. Operating voltage: no need to connect to any power supply, two-wire system
2. The two-wire voltage meter design, the wiring is simple, easy to install
3. When there is a slight error, you can calibrate it through the circuit board, "fine-tuning" potentiometer for calibration
Specifications:
1. Measuring range: AC70V-500V
2. Power supply range：No additional power supply needed, direct use of the measured voltage as a power supply, range: AC70V-500V
3. Maximum input：AC500V. Note: Input voltage higher than 500V may be permanently damaged!
4. Allowable error: ± 1%;
5. Input impedance> 1M ohms
Refresh speed: About 300mS / time
7. Display mode：Three-digit " 0.56 " LED digital tube
8. Display the color: Green/Blue/Red
9. Lead length: about: 20 cm / 7.87 in
10. Outside dimensions: about: 4.8 x 2.9 x 2.2 cm / 1.89 x 1.17 x 0.87 in
Hole Size: about 4.6 x 2.7 cm / 1.81 x 1.06 in
11. Net weight: about 18g
12. Operating temperature: -20 ° C to 65 ° C
This voltmeter's measuring range is AC70-500V It can be used in measuring AC110V 220V 380V.
This voltmeter only need to connect two wires,the connection is simple, low price but has reliable performance. It uses 0.56inch LED digital tube, the displaying is sharp and vibrant.
Precautions：
There is high-voltage on PCB on this voltmeter's back, it is dangerous to touch PCB and components. So we suggest that electronic enthusiasts and ordinary consumers don't use this, please be careful when purchasing.
This voltmeter use capacitance to reach voltage step-down, it can't used in inverter, Electronic speed governing, silicon controlled voltage adjusting dimming, UPS and other occasion with radio-frequency component and non-sinusoidal wave, or it will be bumt and doesn't work normally.
This voltmeter didn't do moisture-proof, waterproof, shockproof, anti-oil processing, please be careful or handle by yourselt when using.
