SA1000 is a combination of an electromechanical relay and an integrated circuit (IC). It is designed to control heavy loads and operate as a supervisory control. SA1000 has a wide range of applications, including controlling motors, valves, and other mechanical devices, as well as providing monitoring and alarm functions. It also provides protection against undervoltage, overvoltage, and overload. The IC-integrated design eliminates the need for manual switches, thereby reducing costs and providing reliability. Besides, it offers several built-in functions, such as short circuit protection, electrical isolation, energy-saving restart and automatic switching between different modes. The SA1000 is a safe and reliable device for use in industrial and home automation applications.