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. Operating temperature: -20 ° C to 65 ° C
12.NOTE:The error of the voltmeter is 0.1%-0.2%, which is within the normal range.