Green - 4pcs Digital Mini Digital Voltmeter 0.28Inch Three-Line 0-100V Digital Voltmeter Gauge Teste

Specifications:
Measuring range: three-wire DC 0~100V
Working voltage: 4~40V (with reverse connection protection), higher than 40V may be damaged
Test accuracy: ±1% >10V error positive and negative 0.2V <10V positive and negative 0.03V
Input impedance: 50K
Working current: <30mA
Refresh rate: about 100mS once
Display specifications: three wire 0.28' LED digital tube
Lead length: default 15cm
Shape ruler: 33 x 11.5 x 9 mm
Mounting hole: 23*10 mm
Opening size: hole distance: 26mm hole diameter: 2.2mm
Working temperature: -10 ~ +65 °C
Working humidity: 10 ~ 80%
Working pressure: 80 ~ 106kPa
LED Color:Red/Blue/Green

Features:
• 2 Connection Methods:3 wires are connected separately to measure voltage and power(yellow red is both forpos, black isneg); 3 wires are