SK07-THC-4B KNX-Sensor used for measuring and controlling indoor air parameters Applications Detection and control of room temperature and humidity Decentralized control for steady KNX-valves or thermal actuators Decentralized ventilation control depending on humidity and air quality Evaluation of external switches and push buttons for switching functions Functions: Sensors not included ! Air temperature and humidity ( external connection, HTU21 ) Calculated values absolute humidity, dew point temperature and energy content ( enthalpy ) Primary temperature input also weighted with additional mixing temperature 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, humidity Fan control via humidity limits and external inputs Detecting of dew point temperature with alarm / regulation at risk of condensation Adaptation for setpoint and limits temperatures Controller output 0..100% or programmable PWM for thermal actuators Valve rinse function Second temperature controller as auxiliary controller Four binary inputs / outputs ( floating ) Four logic blocks for the logical link between internal and external signals Technical Data: Measurement Temperature ( HTU21, external ) rel. Humidity ( HTU21, external ) Calculated Values abs. Humidity Dewpoint Temperatur Enthalpy Controlling Integrated Temperature Range ( HTU21, external ) -25 .. +80°C Resolution 0.02°C Accuracy ± 0.4°C (5..60°C), else ± 0.8°C rel. Humidity Range ( HTU21, external ) 0 .. 100% r.H Resolution 0.02% r.H Accuracy ± 3% r.H (20..80%) at +20°C, else ± 5% r.H Binary In- / Output 4 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 Connection KNX-2-Pole Clamps ( red / black ) Protection Class IP20 Housing KNX Module Plastic Dimensions KNX Module ( 50 x 50 x 20 ) mm ( W x H X D ) 55mm diagonal ( for a standard flush-mounted box) Article Number 30530780 Brand Arcus-EDS