#34;BALLMATIC #34; Digital Thermostat, Modbus RTU RS-485, On-Off Figure : THM-3117-06 + Super Modern Design. + Modbus RS-485 RTU for BAS System, On-Off Valve. + LCD Display with simple user interface. + 2 Pipe Cooling only. + Manual or Automatic 3-Speed Fan Control. + Keycard and External Sensor as Optional. - Catalog, drawing and specification available on request, please contact us for detail. - Compatible with major HVAC Valve Systems.