Feature: 1. LCD display can display voltage, current, power, and electricity at the same time. The display is clear and the reading is convenient. 2. Plug and play, simple and efficient, equipped with standard connectors to prevent wrong connection and short circuit. 3. Made of high quality PC material, the rail wattmeter is high temperature resistant, non flammable, safe to operate. 4. Suitable for electronic engineering, mechanical equipment, electronic equipment, automated production lines. 5. The multifunctional ammeter voltmeter has stable performance, high accuracy and accurate test results, convenient and practical. Specification: Item Type: Ammeter Voltmeter Material: PC Model: PZEM-008 Installation Rail Specification: 35mm Measurement Accuracy: ±1% Voltage Measurement Range: AC50~300V Starting Voltage: 50V Current Measurement Range: 0~100A Starting Current: 0.02A Power Measurement Range: 0~30kW Starting Power: 0.5W Electricity Measurement Range: 0~1999kwh Purpose: Measure AC voltage, current, active power, electric quantity and display them on the LCD screen Applicable scenarios: electronic engineering, mechanical equipment, electronic equipment, automated production lines. Package List: 1 x Ammeter Voltmeter 1 x Power Cable1 x Manual Note: 1. This product is suitable for indoor use.2. This product is suitable for communication.3. The measured voltage and current shall not exceed the calibration range.4. Be sure to wire it correctly.