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The BM-TBB700 are BACnet Master-Slave/ Token-Passing (MS/ TP), full configurable, open protocol networked digital thermostats. They are suitable for 2-pipe or 4-pipe Fan-coil HVAC system of modulating and/or floating controls. The thermostat measures temperature of a room or distant space and then output 0(2)-10Vdc signal by proportional-integral algorithm to control cooling/heating devices and use relays to switch fan speeds and extra on/off devices in the HVAC system to maintain the room space near a desired temperature set point. The 1- or 3-fan speed can be operated in the mode of auto changeover or manual selected continuous mode. This series has a big LCD screen showing room temperature or set point, and related status. And it also has optional digital inputs for detection device such as room occupied/unoccupied detector to enhance energy savings.
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