1. Semi-sealed waterproof ABS shell with anti-collision design, durable to use. 2. The meter with LCD digital display has a wide measuring range of 4-120V. 3. Two-wire direct test, no external power required. 4. Suitable for controlling the battery voltage status in cars, industrial equipment, etc. 5. Digital LCD screen with blue backlight for convenient data reading. Item Type: Voltmeter Material: ABS Optional Type: DC7V-20V, DC7V-30V, DC3.5V-20V, DC18V-80V, DC40V- 100V, DC60V-120V, DC3.5V-30V Working voltage: no need to connect power Display mode: LCD with blue backlight Appearance Size: Approx. 80 x 42 x 13 mm / 3.2 x 1.7 x 0.5 inch Installation Size: Approx. 76 x 39mm / 3 x 1.5 inches Measurement rate: ≥2 times / s Working temperature: -10 - + 50 ℃ Working humidity: 10-80% (non-condensing) Working pressure: 80-106kPa Exposure to sunlight: no direct exposure Weight: approx. 37g / 1.3oz Package list: 1 x Voltmeter