True Presence KNX
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STEINEL 056339

True Presence KNX

Product code: 056339
True Presence is the first sensor that can detect and identify human presence. The "True Presence" detection can see the presence and absence of people over an area of 64m2. Where this sensor cuts above the rest is that the level of total presence detection can cover a massive 177m2, something previously unattainable with other sensors.
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The True Presence KNX is the "eyes and ears" in modern, intelligent buildings. Presence of persons, brightness, room temperature and humidity are captured as sensor variables. 

The True Presence KNX is also equipped with "True Presence" technology, which detects the presence of persons. Thus, true presence and absence is recognizable. The sensor also identifies the walking direction and distance of persons detected. The detection zone of the sensor can be precisely limited via the range setting.

All function settings are made via the Engineering Tool Software (ETS) from version ETS4.0 and higher or via Bluetooth using the Smart Remote app. The Smart Remote app displays the sensor variables and enables activation of the programming mode.

Technical Details


Dimensions 103 × 103 × 32 (W × H × D in mm) 
Current consumption 30 mA
Power supply KNX bus voltage, 21-30 V
Mounting height2-12 m
Detection zone360°
ReachØ 9 m True Presence (mounted up to a height of 4 m) Ø 15 m presence Ø 15 m movement (can be set to within one centimetre)
Sensor values True Presence Light measurement with 2 spectra (daylight and artificial light) Temperature: 0°C to 40°C Relative humidity: (0% - 100%)
Outputs4× light output (ON/OFF, dimming level, scene) Dimming level with effect light Radial approach/leaving/standing Radial distance Constant-lighting control with 2 channels with effect light HVAC, presence, temperature, relative humidity, dew point, logic gate
Time setting 10 seconds to 18:12:15 hours (hh:mm:ss), IQ mode
Twilight setting 2-1000 lux
Temperature range 0°C to +40°C
IP ratingIP20
True Presence frequency 7.2 GHz (responds to micro-movements resulting from the vital functions)
UWB transmitter power -14 dBm
Bluetooth frequency                          2.4-2.48 GHz
Bluetooth transmitter power5 dBM / 3 mW



Technology KNX
Finish White
Mounting Flush
Back Box Round European
Operating voltage KNX Bus (29VDC)
HVAC support Temperature Sensing
Buscoupler Integrated
IP rating IP20

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