Commercial Air Source Inverter Heat Pump Heating Cooling DC Variable Frequency Heat Pump Controller PCBA. Integrated Control Modules: Inverter compressor drive and system operation modules integrated to reduce installation space and costs. Customizable Languages: Supports multiple languages including English, German, Polish, Spanish, and others. Built-in Wi-Fi Control: Enables remote device control via mobile APP with built-in Wi-Fi module. 5-inch TFT Touch Screen: Features a 5-inch TFT color touch screen for quick parameter setting and easy operation. Multiple Working Modes: Includes Heating, Cooling, DHW, Silent, Smart, and Booster modes. Intelligent Defrost Control: Features intelligent defrost control mode for stable and energy-saving operation. Comprehensive Sensor Inputs: Supports eight-way sensor inputs for various temperature monitoring points. Power Off Memory: Retains settings after power loss with built-in memory function.