for room thermostat ref.-no. 1790 RTR, TR D .. 1790 ..
spare part for floor thermostat ref.-no. FTR 231
The sensor cable can be connected using a bifilar cable of 1.5 mm2 in diameter that is suitable for mains voltage. When installed in a cable duct or near high voltage current cables, a shielded cable must be used.
Also suitable as external temperature sensor for the following KNX devices, ref.-no.:
.. 2178 TS .., .. 2178 ORTS .., .. 5192 KRM TS D, .. 5194 KRM TS D, 2177 SV R, 23066 REGHE, 23001 1S U, 23002 1S U, 39001 1S U, .. 459 D1 S
Technical data
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Dimensions: Ø×H 7.8 × 27 mm
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Sensor cable: S03VV-F 2 x 0.5 mm²
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Length connecting cable: 4 m
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Degree of protection: IP 67
Remote sensor resistance values
| Temperature (°C) |
Resistance (kΩ) |
Temperature (°C) |
Resistance (kΩ) |
| 5 |
89.5 |
30 |
26.2 |
| 10 |
68.8 |
35 |
20.9 |
| 15 |
53.5 |
40 |
16.7 |
| 20 |
41.9 |
45 |
13.5 |
| 25 |
33.0 |
50 |
11.0 |
The resistance values can only be measured if the sensor is disconnected.
