MD-LonGW64/E is a protocol-transform gateway. It works between the BMS/BA system using LonTalk® and the air-conditioner using MD protocol. 64 indoor units (MAX) can be connected to the gateway. Controlling items for every indoor unit include: Mode Setting (On/Off, Heat, Cool, Fan), Fan Speed Setting, Temp. Setting, Emergency shut-down. Monitoring items for every indoor unit include: Running Status, Fan Speed Status, Indoor Temp., Malfunction Reports. FT-10 is used to wire in the LonTalk® side.