Technical parameters. Working voltage: no need to connect to a separate power supply, two-wire system. Low power consumption: 0.2 W Wiring method: terminal block Display: LCD with blue backlight External dimensions: 79 x 43 x 25 mm Installation opening: 76 x 39 mm Measurement accuracy: 0.01+2 characters Weight: approx. 60 g Measurement rate: 2 times/S Extreme working conditions. Operating temperature: -10 to +50C Operating humidity: 10 to 80% (non-condensing) Operating Air Pressure: 80 to 106kPa Sun exposure: no direct exposure Main characteristics. 1. good product stability, high measurement accuracy, strong anti-interference ability 2. Standard size appearance, easy to install 3. two-wire system direct test, without external power supply We only sell current meters and voltmeters, not the other items in the picture. Due to the differences between monitors, the picture may not reflect the actual color of the item. Please allow for minor dimensional errors due to manual measurement.