High-precision temperature control chip accurately detects ambient and pipeline temperature, keeps stable cooling and heating without obvious temperature fluctuation. Equipped with high temperature resistant explosion-proof capacitors and premium electronic components, effectively prevent capacitor bulge and frequent maintenance. Modular socket layout with classified terminals, clear wiring mark, easy installation and replacement even for inexperienced repairmen. Thickened PCB with anti-interference shielding coating, blocks electromagnetic interference from inverter outdoor unit to avoid unexpected shutdown and error codes. Pre-programmed with multiple working modes including timing, dehumidification and fan-only mode, suitable for split wall-mounted and cabinet air conditioners.