Established in 2005, Shenzhen hansi Technological Development Co.,Ltd is a high-tech company who specialized in the research , production , selling and service of security products. With 14 years experience of wireless remote system of automatic door, window and smart home control system, HS to be the first brand in this field . HS 's products including wireless transmitter and receiver system , wireless motor controlling system , wireless smarthome control system , wireless smar t home alarm system. All of the products can be used in the accessories of electric screen, Electric-drive airer, electric door and window , smar t home system , smar t home alarm system and so on .