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Room Temperature Controller Cala KNX T 101

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Room Temperature Controller Cala KNX T 101

 • Version: 05.10.2022 • Technical changes and errors excepted. • Elsner Elektronik GmbH • Sohlengrund 16 • 75395 Ostelsheim • Germany • www.elsner-elektronik.de • 

Technical Service: +49 (0) 7033 / 30945-250

EN

Cala KNX T 101

Room Temperature Controller

Technical specifications and installation instructions

Item numbers 70980 (white), 70982 (black)

1.

Description

The 

Room Temperature Controller Cala KNX T 101

 measures the room tem-

perature and displays the current value in white illuminated figures. Via the bus the
device can receive an external measured value and process it with own data to ove-
rall temperature value (mixed value).

The 

Cala KNX T 101

 has got an integrated PI controller for a heating and a cooling

system (one or two step). The room temperature is adjusted by means of the „+“
and „-“ touch buttons.

The device is supplemented with a frame of the switch series used in the building,
and thus fits seamlessly into the interior fittings.

Functions:

Measurement of 

temperature

Mixed value

 from own measured value and 

external values (proportions can be set in percentage), output of minimum 
and maximum values 

Display

 of the actual value or the target value/basic setpoint shift

2 touch buttons

 (+/-) for adjustment of the room temperature

PI controller for heating

 (one or two step) and 

cooling

 (one or two step) 

depending on temperature. Control according to separate target values or 
basic target temperature

Configuration is made using the KNX software as of ETS 5. The 

product file

 can be

downloaded from the ETS online catalogue and the Elsner Elektronik website on

www.elsner-elektronik.de

 in the “Service” menu.

1.0.1. Scope of delivery

Room temperature controller in casing

Base plate

Additionally

 required (not included in the deliverables):

Windproof device socket according to DIN EN IEC 60670-1 and DIN 49073

Frame (for insert 55 x 55 mm), compatible to the switch scheme used in the 
building

1.1. Technical data

The product is compliant with the provisions of EU Directives.

1.1.1. Accuracy of the measurement

Measurement variations from permanent sources of interference (see chapter 

Ins-

tallation position

) can be corrected in the ETS in order to ensure the specified accu-

racy of the sensor (offset).

When 

measuring temperature

, the self-heating of the device is compensated.

2.

Installation and commissioning

Installation, testing, operational start-up and troubleshooting should 
only be performed by an authorised electrician.

CAUTION!
Live voltage! 

There are unprotected live components inside the device.

• Inspect the device for damage before installation. Only put undamaged 
devices into operation. 
• Comply with the locally applicable directives, regulations and provisions for 
electrical installation. 
• Immediately take the device or system out of service and secure it against 
unintentional switch-on if risk-free operation is no longer guaranteed.

Use the device exclusively for building automation and observe the operating inst-
ructions. Improper use, modifications to the device or failure to observe the opera-
ting instructions will invalidate any warranty or guarantee claims.
Operate the device only as a fixed-site installation, i.e. only in assembled condition
and after conclusion of all installation and operational start-up tasks, and only in the
surroundings designated for it.
Elsner Elektronik is not liable for any changes in norms and standards which may
occur after publication of these operating instructions.

2.1. Installation position

The 

Room Temperature Controller Cala KNX T 101

 is installed on a device so-

cket.

May be installed and operated in dry interior rooms only. 

When selecting an installation location, ensure that the measurement results are af-
fected as little as possible by external influences. Possible sources of interference
include:

Direct sunlight

Drafts from windows and doors

Draft from ducts which lead from other rooms or from the outside to the 
junction box in which the sensor is mounted

Warming or cooling of the building structure on which the sensor is mounted, 
e.g. due to sunlight, heating or cold water pipes

Connection lines and ducts which lead from warmer or colder areas to the 
sensor

Measurement variations from permanent sources of interference can be corrected
in the ETS in order to ensure the specified accuracy of the sensor (offset).

2.2. Device structure

2.2.1. Casing

2.3. Installation of the sensor

First install the windproof socket with feed line. Seal the inlet tubes as well, in order
to prevent draughts.

Casing

Genuine glass, plastic

Colours

• similar to RAL 9010 pure white 
• similar to RAL 9005 deep black

Installation

on device socket according to 
DIN EN IEC 60670-1 and DIN 49073

Degree of protection

IP 20

Dimensions

Housing approx. 55 x 55 (W x H, mm), 
Installation depth approx. 10 mm, 
Base plate approx. 71 x 71 (W x H, mm)

Total weight

approx. 50 g

Ambient temperature

Operating -5…+45°C, storage -30…+85°C

Ambient humidity

5...95% RH, avoid condensation

Operating voltage

KNX bus voltage

Bus current

max. 15 mA

Data output

KNX +/- Bus plug-in terminal

Group addresses

max. 183

Allocations

max. 183

Communication 
objects

41

Temperature measu-
rement range

-5…+60°C

Fig. 1: Sectional drawing.
The 

Room Temperature Controller 

Cala KNX T 101

 fits in a standard con-

nector socket (Ø 60 mm, depth 42 mm). 
The frame is not included in the delive-
ry!

Installation depth

27 mm

Construction depth

10 mm

Fig. 2: Front
1 Ventilation slit (top and bottom)
2 Temperatur display
3 Touch area -
4 Touch area +

2

1

4

1

3

Fig. 3: Back
1 Base frame
2 KNX terminal BUS +/-
3 Programming button (reces-

sed) for teaching the device

4 Programming LED (recessed)
5 Catches

5

1

3

2

4

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