Full-automatic high precision household appliances stabilizer is composed of automatic coupling regulator, sampling control board, executing mechanism. It has the characteristics of small of in volume, light, little in distortion output wave from, quick in reaching etc, It is especially suitable for household air conditioner, refrigerate ,TV set and music center. It also can leng then their use span ,and so is the idealist AC ,stabilizer of modern families. The product needs least power consumption and can be used continuously.