DY4100 Digital Ground Resistance Tester for testing earth resistance of grounding systems, electrical equipment, low-resistance conductors, and AC voltage. Features enhanced functionality, improved accuracy, and reliable operation with a dust and water-resistant design suitable for outdoor use. Features: Color: as shown Material: plastic Earth Ground Resistance Range: 0/20/200/2000 Resolution: 0.01 Earth Voltage: 030V 3% + 5 digits Data Hold function Function symbol display Automatic range selection Low battery indicator Power: 6 x AA 1.5V batteries (UM-3), 12V adapter (not included) Dimensions: 150 x 100 x 70 mm Weight: 680g Package Contents: 1 x DY4100 Digital Earth Ground Resistance Tester 2 x Auxiliary earth stakes 3 x Test leads (red 15m, yellow 10m, green 5m) 2 x Short test leads (red 1.6m, green 1.6m) Note: The package includes only the items listed above. Other items are not included. Due to lighting and display differences, actual product color may vary slightly from images. Measurement error tolerance: 13 cm.