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SK20-TTHC-2B - KNX Room Temp/Humidity Sensor with 2nd PT1000 Input and 2 Binary Inputs, White
✗
UL Listed
This product has not been certified by an NRTL (UL, ETL, CSA or
equivalent). Installation in USA projects may require a Field Evaluation
by a recognized laboratory. Consult your local AHJ before specifying.
~
Low Voltage · SELV
This device operates on a Safety Extra Low Voltage circuit — such as
the KNX 29V bus or a DALI 16V bus (NEC Class 2). When powered by an
NRTL-listed power supply, many AHJs accept non-listed SELV devices.
Verify with your local AHJ before specifying.
Regular price
$261.67 USD
Regular price
-17%
$314.01 USD
Sale price
$261.67 USD
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The SK20-TTHC-2B is a self-contained KNX room temperature and humidity sensor in a white 71 x 71 mm (2.8 x 2.8 in) plastic housing for a standard in-wall box. It adds an input for a second, external PT1000 temperature probe (not included).
It includes an integrated room temperature controller (RTR), calculates absolute humidity, dew point and enthalpy, and offers two binary inputs for contacts or push buttons. Bus powered and configured in ETS with the HLK305 application.
Key Features
- Temperature -25 to +80 °C (-13 to 176 °F), ±0.4 °C (±0.72 °F) between 5 and 60 °C (41 to 140 °F); 0.02 °C (0.04 °F) resolution
- Humidity 0-100 % RH, ±3 % RH between 20 and 80 % RH
- Calculates absolute humidity, dew point and enthalpy
- Input for a second, external PT1000 temperature probe (not included), -50 to +400 °C (-58 to 752 °F)
- Integrated KNX bus coupler and room temperature controller (RTR)
- 2 binary inputs
- White plastic housing, 71 x 71 x 25 mm (2.8 x 2.8 x 0.98 in), IP20; flush mount; bus powered; ETS application HLK305
Technical Specifications
| Article no. | 30541261 |
|---|---|
| KNX bus voltage | KNX 21-32 VDC |
| Power consumption | approx. 240 mW at 24 VDC (bus powered) |
| Auxiliary supply | Not required (bus powered) |
| Measuring | Temperature + humidity (sensors in housing); Temperature -25..+80 °C (-13 to 176 °F), res. 0.02 °C (0.04 °F), accuracy ±0.4 °C (±0.72 °F) (5..60 °C (41 to 140 °F)) else ±0.8 °C (±1.4 °F); Humidity 0..100 % rH, res. 0.02 % rH, accuracy ±3 % rH (20..80 %) at +25 °C (77 °F) else ±5 % rH; calculates abs. humidity, dew point, enthalpy; 2nd temperature: external PT1000 input -50..+400 °C (-58 to 752 °F) (accuracy depends on probe; probe not included) |
| Inputs / outputs & connections | 2 binary inputs; external PT1000 input |
| Protection rating | IP20 |
| Dimensions | 71 x 71 x 25 mm (2.8 x 2.8 x 0.98 in) |
| Mounting | Flush mount on standard in-wall box, indoor (complete white plastic unit) |
| Operating temperature | -25 to +80 °C (-13 to 176 °F) (storage -25 to +80 °C (-13 to 176 °F)) |
Downloads
(CE certified; not UL/NRTL listed — verify local code requirements before specifying in US installations)
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