Features Clear and Bright LED Display: The mini digital blue LED display offers automatic movement and clear visibility, providing convenient access to measurement results. No External Power Supply Required: This voltage tester operates without the need for an external power supply, allowing direct use of the measured voltage as the power supply. Convenient 2-Wire Design: The 2-wire design enables convenient wiring with reverse connection Defence, covering a measurement range of AC 70V to 500V. Easy Installation and : The red wire connects to the positive pole, and the black wire to the negative pole, ensuring good stability, high accuracy, and easy reading. High Stability and Accuracy: This digital display meter features good stability, high measurement accuracy, and convenient reading, making it an easy-to-install and use device. Specification: Item Type: AC Voltage and Current Digital Display Meter Material: ABS Model: AT-5035-A/V Voltage Measurement Range: 50-500V Current Measurement Range: 1-80A Display: LED Digital Tube Working Environment: -20℃~40℃, Humidity ≤80% Purpose: Measure Voltage and Current Package List: 1 x Header 1 x Wiring 1 x Wire with Magnet Package List 1 x Header 1 x Wiring 1 x Wire with Magnet