XL34LCDV-4 module voltmetre LCD

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Description:
- auto zero setting
- auto polarity changing

Operation specifications:
Power source: 5V DC 30mA
Full range: 0~399.9V
Display: LCD 15mm
Resolution: 0.1V
Accurancy: 0.3% + 2digit
Max input impedance: 10MOhm
Operating temperature: 0-40°C
Humidity: 20-80%
Weight: 30g
Panel cutout: 76x39,5mm
Dimension: 79x42x30mm
Sample frequency: 400ms