Compact and convenient, this user-friendly device will simplify your life! Features: 1. Measures electrical parameters: voltage, current, active power, energy, frequency, and power factor. 2. Overload alarm: triggers with a flashing backlight and current when exceeding the warning limit. 3. Customizable current warning limit: set your preferred threshold. 4. One-button energy reset. 5. Data storage in case of power failure. 6. Large, easy-to-read LCD screen. 7. Backlight for clear visibility. 8. Simple key operation. Backlight Control: A short press turns the backlight on or off. The backlight remembers its last setting, even after power loss. Energy Reset: Step 1: Press and hold the button for 5 seconds until the energy display flashes, then release. Step 2: Briefly press the button again to clear the energy value and exit the reset mode. Step 3: If no action is taken within 5 seconds, the energy value will not be cleared, and the reset mode will exit. Setting the Current Warning Limit: Step 1: Press and hold the button until the LCD displays "SET CLr", then release to enter setting mode. Step 2: The current warning value is displayed, and the last digit flashes. Short press to increment by 1. If no action is taken for 3 seconds, the digit position will automatically shift. Use the same method to adjust other digits. Step 3: Once complete, press and hold the button for 5 seconds to automatically save and exit. The active power limit is 0.0 ~ 2.5kW. It can display six parameters simultaneously. Specifications: Working Voltage: 80 ~ 260VAC Test Voltage: 80 ~ 260VAC Rated Power: 100A / 22000W Operating Frequency: 45-65Hz Measurement Accuracy: Class 1.0 Size: 9 * 5 * 2.5 cm Cable Length: 19 cm Weight: Approx. 110 g Display Format: 1. Power Test Range: 0 ~ 22000W Measurement Starting Power: 0.2W <10W Display Format: 1.00 ~ 9.99W <100W Display Format: 10.0 ~ 99.9W <1000W Display Format: 100 ~ 999W <10000W Display Format: 1.00 ~ 9.90kW ≥10000W Display Format: 10.0 ~ 22.0kW 2. Energy Test Range: 0 ~ 999kWh <1kWh Display Format: 0 ~ 999Wh <10kWh Display Format: 1.00 ~ 9.99kWh ≥10kWh Display Format: 10 ~ 999kWh 3. Voltage Test Range: 80 ~ 260V Display Format: 80 ~ 260V 4. Current Test Range: 0 ~ 100A Measurement Starting Current: 0.001A <10A Display Format: 0.000~9.000A ≥10A Display Format: 10.00~99.99A 5. Frequency Test Range: 45~65Hz Display Format: 45~65Hz 6. Power Factor Test Range: 0~1PF Display Format: 0.00~1.00PF Precautions: 1. This module is designed for indoor use only. Do not use outdoors. 2. The applied load must not exceed the rated power. 3. Ensure correct wiring. Package Includes: 1 * AC Power Meter 1 * 100A Split Core Current Transformer