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ABB i-bus® KNX
Guest Room Management

Transponder Reader, Chiara 2 modules
The “transponder reader” is a flush-mounting device, designed to realize access control sys-
tems with a communication support based on KNX bus. It is equipped with one relay
(4 A @24 V AC/DC) and one input to be used for connecting external conventional card-
holder (e.g. Chiara wiring accessories card-holder).
The output can be programmed in three different ways: “Linked to access control”, receiving
TR/U 1.1.CH in this case switching commands from the device itself (according to transponder card vali-
dation); being a standard KNX Switch actuator output, able to be controlled by every
KNX-standard devices; “linked to card-holder”, that means that the relay is switched accord-
ing to closing/opening internal input contact available on transponder reader.
The bicolor (red-green) LED placed on the front of the device allow you to monitor device op-
eration and can be also switched ON/OFF in the proper color according to KNX telegram
(for example for DND/MUR purposes).
The transponder reader requires a 12...24 V AC/DC external power supply to ensure its oper-
ation even with bus voltage failure.
The transponder reader is available for ABB Chiara wiring accessories range.

Description Mod. Order details Price Weight Pack
width 1 piece 1 piece unit
Type code Order code kg pc.
– TR/U 1.1.CH 2CSK289601R1902 1

Transponder Holder, Chiara 2 modules
The “transponder holder” is a flush-mounting device for British Standard wall boxes, de-
signed to realize access control systems with a communication support based on KNX bus.
It is equipped with one relay (4 A @24 V AC/DC) and one binary input to be used for connect-
ing external conventional push-button for switch, dimmer and shutter functionalities, or for
example for connecting window contact or similar.
TH/U 1.1.CH The output can be programmed as “Linked to access control”, receiving in this case switch-
ing commands from the device itself (according to card insertion/removal); or being a stan-
dard KNX Switch actuator output, able to be controlled by every KNX-standard devices. The 14
bicolor (red-green) LED placed on the front of the device allow you to monitor device opera-
tion and can be also switched ON/OFF in the proper color according to KNX.
The transponder reader requires a 12...24 V AC/DC external power supply to ensure its oper-
ation even with bus voltage failure.
The transponder reader is available for ABB Chiara wiring accessories range.

Description Mod. Order details Price Weight Pack
width 1 piece 1 piece unit
Type code Order code kg pc.
– TH/U 1.1.CH 2CSK202481R1922 1