Siemens RDF302 Flush-mounted room thermostats with RS485 Modbus communications

Siemens RDF302 Flush-mounted room thermostats with RS485 Modbus communications

RS485 communicative interface in Modbus RTU slave mode
∂ Backlit display
∂ 2P / PI / P control
∂ Outputs for on/off or 3-position control
∂ Outputs for 3-speed or 1-speed fan
∂ 2 multifunctional inputs for keycard contact, external sensor, etc.
∂ Operating modes: Comfort, Economy and Protection
∂ Automatic or manual fan speed control
∂ Automatic or manual heating/cooling changeover
∂ Minimum and maximum limitation of room temperature setpoint
∂ Control depending on the room or the return air temperature
∂ Adjustable commissioning and control parameters via local HMI or RS485
Modbus
∂ Mounting on recessed square conduit box, 60.3 mm fixing centers
∂ AC 230 V operating voltage
∂ User and parameter settings can be retained or restored with power loss