WS-GSM-MINIPCI is one popular product designed for the automation of home appliances. Its UART and TTL interface, with simple AT instructions can make home appliances evolve *** IOT devices. Just need operating voltage 3.3V able to operate, and standby current is 0.03A. It an environmental regulations compliant product, and it can widely be applied. The WS-WIFI module can be used in many devices such as the air conditioner, the washing machine, fans, the gas switch, temperature sensing, handheld devices, sports facilities, access permission ...etc.