Features:

• 2 Connection Methods:3 wires are connected separately to measure voltage and power(yellow red is both forpos, black isneg); 3 wires are used as 2 wires, connected to measure voltage and Yellow can be pair forpos, black isneg).

• Mini Voltmeters: 0.28 inch LED Panel; small in size and light in weight.

• Features:Reverse polarity-protection, voltmeter will not burn out if reverse-polarity is applied; high-precision; low starting working voltage; fine adjustment function.

• Good quality: This product is made of high-quality materials, exquisite workmanship, very good quality and long service life.

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: 50KΩ

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/Yellow

Package included:

• 1X  0.28inch Digital Mini Digital Voltmeter 0.28Inch