Two Wire design. High accuracy to meet most applications requirements. With reverse polarity protection. Specifications: Display: 3 Digits LED Measuring voltage range 4.5V-30.0V Precision: 1% Operating Current: less than 20mA Input impedance> 100K ohms Refresh speed of about 300mS Display Color: Red/Blue/Green Operating temperature -10 ℃ ~ 65 ℃ Size: Approx. 48x29x22mm/1.81x1.14x0.87" Dimensions: 48 x 29 x 22 mm(LxWxH) Mounting hole: 46 x 27 mm Net weight: 18g Red wire: +ve Black wire: -ve Package Includes: 1 x LED Digital Voltmeter |