Siemens RDF800KN Thermostat

KNX communications
3 multi-functional inputs for keycard contact, external room / return air temperature (QAH11.1, QAA32), heat / cool changeover, operation mode changeover, window contact on/off, dew point monitor, electrical heater enabled, fault contact
Operating modes: Comfort, Economy and Protection
2-position, 3-position or PWM control outputs
Automatic or manual fan speed for 1-speed, 3-speed fan
Automatic or manual heating / cooling changeover
Adjustable commissioning and control parameters
Minimum and maximum set point limitation
Backlit display