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Room Temperature Controller KNX eTR 101

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Room Temperature Controller KNX eTR 101

 • Version: 13.02.2019 • 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

KNX eTR 101

Room Temperature Controller

1.

Description

The 

Room Temperature Controller KNX eTR 101

 measures the room tempera-

ture and displays the current value. Via the bus the device can receive an external
measured value and process it with own data to overall temperature value (mixed
value).

The 

KNX eTR 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.

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

 (+/-) vor 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 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 with mounting

4 screw anchors 4 × 20 mm, 4 flat head screws 3 × 25 mm

1.1. Technical specifications

The product conforms with the provisions of EU guidelines.

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 ac-

curacy of the sensor (offset).

When 

measuring temperature

, the self-heating of the device is compensated.

2.

Installation and commissioning

2.1. Installation notes

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

CAUTION!

Live voltage! 

There are unprotected live components inside the device.

National legal regulations are to be followed.

Ensure that all lines to be assembled are free of voltage and take
precautions against accidental switching on.

Do not use the device if it is damaged. 

Take the device or system out of service and secure it against
unintentional use, if it can be assumed, that risk-free operation is no
longer guaranteed.

The device is only to be used for its intended purpose. Any improper modification
or failure to follow the operating instructions voids any and all warranty and gua-
rantee claims.

After unpacking the device, check it immediately for possible mechanical damage.
If it has been damaged in transport, inform the supplier immediately.

The device may only be used as a fixed-site installation; that means only when as-
sembled 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.

2.2. Installation position

The 

Room Temperature Controller KNX eTR 101

 is made for wall mounting.

The device can be mounted directly on plaster or on a socket (Ø 60 mm).

May be installed and operated in dry interior rooms only. 
Avoid condensation.

When selecting an installation location, please ensure that the measurement results
are affected as little as possible by external influences. Possible sources of interfe-
rence 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).

2.3. Composition of the device

2.4. Mounting

Prepare the device

Remove the front panel from the mounting. Release the lock by moving the front pa-
nel a few millimetres upwards. The two parts can then be easily separated (Fig. 4). 

Housing

plastic material, glass

Colours

similar to RAL 9003 signal white

Mounting

on-wall (directly or with a socket 

Ø

60 mm, 

resp. cavity wall socket for hole 

Ø

 68 mm)

Protection category

IP 20

Dimensions

housing approx. 81,5 x 81,5 (W x H, mm), 
mounting depth approx. 12 mm

Total weight 

approx. 65 g

Ambient temperature

Operation and storage -25…+80°C

Ambient air humidity

max. 95% RH, avoid bedewing

Operating voltage

KNX bus voltage

Bus current

10 mA at 50% LED brightness,
18 mA at 100% LED brightness

Data output

KNX +/- bus terminals

BCU type

Own micro controller

PEI type

0

Group addresses

max. 254

Allocations

max. 254

Communication objects

41

Temperature measure-
ment range

-25…+80°C

Temperature resolution

0.1°C

Temperature accuracy

± 0.6°C (Mind the notes on 

Accuracy of the 

measurement

)

Technical specifications and installation instructions

Item n° 70650

1

3

Fig. 1 
Front view
1 Touch area -
2 Temperatur display
3 Touch area +

2

4

5

6

Fig. 2 
Back view with mounting
4/5 Screw holes for different sockets. Fas-

tening with 2 screws is sufficient. For 
wall mounting, use a fixing material 
suitable for the ground!

6 KNX bus te/- for connection 

when mounted on a socket

7 Spring-loaded terminals KNX bus for 

mounting directly on the wall

4

4

4

5

5

5

7

Fig. 3 
Back view without mounting
6 KNX bus te/- for connection 

when mounted on a socket

7 Spring-loaded terminals KNX bus for 

mounting directly on the wall

8 Programming button (recessed) for 

teaching device 

9 Programming LED (recessed)

PRG key and LED are accessible from be-
low/outside when the device is mounted 
(see chapter Addressing the device).

6

7 8 9

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