The BT01B-FCU-2MN is a Modbus modulating thermostat designed for 2-pipe fan coil unit systems. It provides precise temperature control and integrates with building management systems through Modbus RS485 communication. Key features: Power supply 24VAC / 110VAC / 220VAC, 50/60Hz. 2-pipe FCU control with 0-10V output for motorized valve. 3-speed fan control: Low / Medium / High. Modbus RS485 communication for BMS and building automation integration. External sensor function for flexible installation in special environments. Applications: commercial buildings, hotels, apartments and other 2-pipe fan coil unit systems. Model: BT01B-FCU-2MN. Minimum order quantity: 50 pieces. Port: Xiamen. Lead time: 20-25 days. Payment terms: T/T. Price: Negotiable. The USD 1 price shown is a placeholder only, not the actual selling price.