Environmental Control Unit
How to pronounce:
ɪnˌvaɪərənˈmɛntl kənˈtrəʊl ˈjuːnɪt
ECU for short. Devices or systems that enable individuals to control various electronic devices (e.g. lights, televisions, telephones, music players, door openers, security systems, and kitchen appliances) in their environment through a variety of alternative access methods, such as switches or voice access.