Basic Documentation

Product overview
Type summary
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2 Product overview
The fine dust room sensor is designed to measure and transmit indoor
concentrations of PM2.5 and PM10. This wall-mounted product has variants with or
without displays and can connect directly to Siemens BT controllers as well as
many third party controllers via voltage output or Modbus.
2.1 Type summary
Type Order number Description Display
QSA2700 S55720-S457
Room sensor for detection
of PM2.5 and PM10
3-color LED service indication
QSA2700D S55720-S458
Room sensor with LCD
display for detection of
PM2.5 and PM10
2.4-inch color LCD screen for
PM2.5 values, Air Quality Index,
and service
AQS2700 S55720-S459
Sensor module for
replacement
2.2 Contents of QSA2700D and QSA2700
Items Quantity
Fine dust sensor 1
Plastic mounting plate 1
Screws 2 pcs
Mounting instructions 1
2.3 Features
The fine dust room sensor is designed to measure and transmit indoor
concentrations of PM2.5 and PM10.
● 0…10 V and Modbus output
● Configurable Modbus parameters
● Quick configuration (on-event addressing) with Siemens Climatix
TM
controller
● QSA2700:
– 3-color LED service indication
● QSA2700D:
– 2.4-inch color LCD screen for PM2.5 & PM10 values, and AQI indication
– Energy efficient mode: The screen is off if no obstacle is in front of the
sensor (within 1 m for several minutes)
– Micro USB DC 5V for display
– 4 selectable languages: English, Chinese (default), German, French
– 3 selectable Air Quality Index classes