🔌 Power Up Your Savings! Monitor energy usage to cut costs and boost efficiency. Auto-store energy data even during power outages. Choose between built-in or external CT for easy setup. 178° color LCD for clear visibility from any angle. Track voltage, amps, watts, kWh, frequency, and power factor. AC 40-300V 0-450000W 0-100A The Digital Single Phase Energy Meter Tester is a versatile electricity usage monitor designed for AC 110V applications. It features a wide voltage measuring range of 40-300V, current measuring capabilities up to 100A, and tracks active power up to 450,000W. With a clear 178° color LCD screen, built-in memory function, and options for built-in or external CT, this device is perfect for anyone looking to optimize energy consumption and reduce costs.