Data Sheet for Product

5/14
Siemens Flush-mount room AQR253…, AQR257… CE1N1411en
Smart Infrastructure KNX S-Mode / KNX LTE-Mode / KNX PL-Link 2020-12-31
The background-lit symbol informs on the current level of CO
2
in the room. The
colors green / orange / red of the background lighting indicate good / mediocre /
poor air quality. The display can be switched on or off via communication object,
e.g. switch or timer.
The room sensor acquires the states of up to two potential-free contacts. The two
inputs can be parameterized freely to switch and dim lighting as well as control
solar protection plants via suitable actors. At the same time, window contacts, for
example, can also be monitored. The states are transmitted to other bus members.
The room sensors can be connected to suitable heating, ventilating, and air
conditioning actors with KNX S-Mode via integrated control functions for room
temperature, humidity, and air quality.
A proven PID controller for heating and cooling in KNX S-Mode is provided to
control the room temperature.
The integrated room humidity controller and room air quality controller can be used
for ventilation control.
Design
Base module
Frame
Front module
1411J 05
B
A
C
D
A KNX bus connection terminal
B Mounting plate
C Anti-theft device
D Design frame
The room sensor comprises:
• One base module with snapped-on mounting plate.
• One design frame (ordered as separate accessory) and
• One front module.
The sensing elements are located in either the base or the front module (see "Type
summary").
Engineering notes
For detailed information on engineering, mounting, and commissioning room
sensors, see Technical principles CE1P1411en.
Air quality indication
(AQR2535…Q)
Binary inputs
(AQR257…)
Control functions
(AQR257…,
KNX S-Mode)
Detailed product
documentation