Features MEASURING RANGE: The voltage measuring range is AC60‑500V, the current measuring range is 0‑100A, with 2% accuracy, and 2 time/s speed. LED DISPLAY: The digital energy meter adopts LED screen, the red indicator for voltage and green indicator for current, which is clear and intuitive. EASY CONNECTION: The 2 wires of the meter can be directly connected to the tested object, voltage and current can be measured without the need for power supply. POTENTIOMETER: The voltmeter is equipped with accurate CT, the built in fine tuning potentiometer enables you to easily calibrate the energy meter. COMPACT SIZE: This digital electricity tester is single phase and dual display design, with compact size, and can be flexibly installed anywhere. Spec: Item Type: Digital Energy Meter Model: D85-5035VA Material: ABS Current: 0-100A Environment Temperature: -25-50℃ Measurement Error: 2% Size: Approx. 70 x 42mm / 2.8 x 1.7in How to Use: Use according to the wiring diagram. packing list: 1 x Voltage Current Meter 1 x Current Transformer 1 x Connection Line Package List 1 x Voltage Current Meter 1 x Current Transformer 1 x Connection Line