This compact digital voltmeter offers a convenient solution for monitoring DC voltage with ease and accuracy. Its small, lightweight form enhances portability while the clear LED display provides readable data in various settings. The device resists water and impacts, making it suitable for on-site troubleshooting and daily electrical maintenance tasks. Features -Color:Black -Material:Plastic -Size:4.00X1.00X1.30cm/1.57X0.39X0.51in - Working Current: <30mA. - Display: 0.28 inch - Measuring rate: >=200 mS / times - Measurement accuracy - Operating temperature: -10-65 degree centigrade. -Waterproof Build: Designed with solid plastic materials, this voltmeter withstands exposure to moisture and heavy use, ensuring reliable performance in rugged environments -Reverse Polarity Safe: Equipped with protection against reverse polarity, preventing damage to the device if connections are reversed, enhancing safety during use -Adjustable Calibration: Features a calibration screw on the rear, allowing users to fine-tune accuracy for precise voltage readings tailored to specific needs -High Stability and Reliability: Manufactured with components to maintain consistent measurement accuracy and dependable operation over time -Compact and User-friendly: Small size with a sleek design makes it easy to transport and operate, suitable for professionals and hobbyists requiring quick voltage checks Package list: 3 x Voltmeters