SK20-TTHC-2B KNX-Sensor used for measuring and controlling indoor air parameters Applications: To be added here!! Functions: Air temperature ( sensor in housing ) also weighted with external temperature Relative humidity ( sensor in housing ) Calculated values absolute humidity, dew point temperature and energy content ( enthalpy ) External PT1000 connector ( PT1000 not included ) Control functions for heating and cooling applications ( can be combined ) Setpoint temperatures for Comfort, Standby, Economy and Protection, selectable via KNX HVAC objects Setpoint change via objects Storage of minimum- and maximum-temperature Heat- and frost-alarm Limits for temperature and humidity Fan control by humidity limits and external inputs Detecting of dew point temperature and alarm / regulation at risk of condensation Adaptation for setpoint and maximum temperatures Controller output 0…100% or programmable PWM for thermal actuators Valve rinse function Second temperature controller as auxiliary controller Two binary contacts. Four logic blocks for the logical link between internal and external signals. Technical Data: Measurement Temperature Relative Humidity Calculated Values Absolute Humidity Dewpoint Temperature Enthalpie Control Integrated Temperature Range -25 .. +80°C Resolution 0.02°C Accuracy ± 0.4°C (5..60°C), else ± 0.8°C rel. Humidity Range 0 .. 100% r.H Resolution 0.02% r.H Accuracy ± 3% r.H (20..80%) @ 25°C, else ± 5% r.H PT1000 not included Temperature Range -50 .. +400°C ( depending on the sensor used ) Resolution 0.02°C Accuracy depending on the sensor used Binary inputs 2 Operating Voltage KNX Bus Voltage 21 .. 32VDC Power Consumption approx. 240mW ( at 24VDC ) Environment Temperature KNX-Module Operating: -25 .. +80°C Storage: -25 .. +80°C Environment Humidity KNX-Module 0 .. 100% r.H Non Condensing Bus Coupler Integrated Auxiliary Supply Not Required Startup with the ETS Version 4 or higher HLK305 Curcuit Points KNX 2-Pole Clamps ( red / black ) Protection Class IP20 Housing KNX-Module Plastic white Dimensions Housing KNX-Module ( 71 x 71 x 25 ) mm Article Number 30541261 Brand Arcus-EDS