1. Suitable for most household split air conditioners, stable control of cooling and heating, clear wiring, easy installation, and worry free replacement and maintenance 2. Regulating the operation of the compressor, energy-saving and efficient, compatible with mainstream variable frequency models, and with complete and durable circuit protection. 3. High load adaptation to high-power commercial air conditioning, overload and short circuit prevention, multi-mode operation control, suitable for engineering scenarios. 4. Support basic operation regulation, adapt to the basic functions of intelligent air conditioning, clear wiring identification, and low installation threshold. 5. Integrated power supply and operation control, plug-in interface, easy replacement, stable performance