This voltmeter has fast response, high accuracy, clear display, intuitive readings, and good stability; Advanced and reasonable circuit design, strong anti-interference, and can effectively suppress high-frequency interference; The set uses high-quality materials, sophisticated technology and beautiful appearance. Long service life, extremely convenient installation and use. It is a voltmeter suitable for welding and assembly by various universities and DIY enthusiasts. Kit Name: ICL7107 Voltmeter DIY Kit Board Size: 70.6x39mm Meter Head Size Mounting Hole: 77x40mm Display Window Size: 51x24mm Electrical Parameters: Working Voltage: DC5V Working Current: 35mMeasurement Accuracy: It can be calibrated for higher accuracy and temporarily has no parameters. Measuring range: divided into 3 gears, 0-2V gear measuring small voltage0-20V range to measure low and medium voltage0-200V gear, measure higher voltage. K