Features: Use in vertical direction. The lines and fonts of the dial are clear. Clamping installation, equipped with two clamping parts and accessory screws, convenient for installation. Light and simple design with good practical performance, smooth appearance, crack resistant and brittleness resistant. Suitable for displaying power-off parameters on display panels and large switch panel indicator cabinets installed in various control systems and power distribution systems, such as AC and DC current, voltage, power factor, power, synchronization value, frequency, deployment voltage, and overload current. Specifications: Material: Plastic Accuracy: 2.5 Working Temperature: -20 to 50°C Relative Humidity: 85% Size: Approx. 82x82mm / 3.23x3.23in Note: Please allow 1-2cm errors due to manual measurement; ensure you are comfortable with this before ordering. Due to differences between monitor displays, the picture may not reflect the actual color of the item. Package includes: 1 x Battery Voltmeter