Vôn Kế Kỹ Thuật Số Với 2 Dây Ac

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Giới thiệu Vôn Kế Kỹ Thuật Số Với 2 Dây Ac

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Description:
This voltmeter's wiring is simple, it only need to connect two wires, the red wire is to connected to positive pole, the black wire is to connected to negative pole.
There is protection when the wires aren't correctly connected, the electric circuit won't be bummed.It has reverse connect protection.
This voltmeter doesn't need external drive working power, it can work with measuring voltage, the working voltage's range is 70-500V.
Good stability and high measurement accuracy. With trimmer potentiometer.
Easy to read, install and use. No need external power supply.

Specification:

Item Name: Digital Voltmeter
Measuring Range: AC 70V - 500V
Power Supply Range: AC 70V - 500V(No additional power supply needed, direct use the measured voltage as a power supply.)
Maximum Input: AC 500V(Note: Input voltage higher than 500V may be permanently damaged!)
Allowable Error: ±1%
Input Impedance: >1MΩ
Working Current: Red: <23mA, Green: <18mA, Blue: <17mA
Refresh Speed: About 300mS/time
Display Mode: Three-digit "0.56" LED Digital Tube
Display Color: Red, Green, Blue (Optional)
Lead-cable Length: 20cm/7.87" (Approx.)
Operating Temperature: -20℃ - 65℃
Size: 4.7cm x 2.9cm x 2.1cm/1.85" x 1.14" x 0.83" (Approx.)

Package Included:1 x Digital Voltmeter

Note:
Due to the light and screen setting difference, the item's color may be slightly different from the pictures.
Please allow slight dimension difference due to different manual measurement.

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