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Sfr-Apf Automatic Active Power Filter Harmonic Analyzer. Effective Harmonic Suppression: Reduces unwanted harmonics from non-linear loads to improve power quality. Flexible Communication: Supports RS485, RS232, and Ethernet interfaces for seamless integration. Comprehensive Protection: Features over-voltage, under-voltage, over-current, and over-temperature protection. OEM/ODM Customization: Factory provides OEM/ODM services with experienced R&D team support. Fast Delivery for Stock Items: 3-5 working days delivery for items in stock, 15-21 days for out of stock. CE Certified Quality: Product meets CE certification standards for safety and performance.