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Elegant appearance, touch-operated interface, large display, and Modbus-compatible

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Good room climate is measurable!

Active and Modbus capable room sensors for temperature, humidity and CO2 now also for in-wall installation!

AERASGARD® FSCO2

All quite relative

Pressure measuring transducer for gaseous and liquid media in cost-efficient Standard version for 0 to 16 bar

PREMASGARD® SHD-SD

VOC in focus

Room and duct sensors for detection of mixed gases in cost-efficient Standard versions

AERASGARD® RLQ-SD

Für jede Anwendung die richtige Lösung [Translate]

FSFTM-CO2-MODBUS P

AERASGARD® FSFTM-CO2-MODBUS P

Item No. 1501-9226-6501-282
EAN 4 251325 617282

The room sensor and measuring transducer AERASGARD® FSFTM - CO2 - Modbus
in the in-wall enclosure, optionally with potentiometer, is used to measure the CO2 content,
relative humidity and temperature of the air, and for setpoint adjustment.
The measured values are queried via the Modbus interface.

The CO2 content of the air is measured using an optical NDIR sensor (non-dispersive
infra-red technology). A digital, long-term stable sensor is used for humidity and temperature
measurement. Relative humidity [% r. H.] is the quotient of water vapour partial pressure
divided by the saturation vapour pressure at the respective gas temperature.

The in-wall sensor is mounted in high-quality panel switch programmes, ideally of the brands
Gira, Berker, Merten, Jung, Siemens or Busch-Jaeger (using in-wall adapters, no setpoint
adjustment possible) either individually or in combination with light switches, socket outlets, etc.

It is used in non-aggressive, dust-free environments, in refrigeration, air conditioning and
clean room technology, and in interior rooms, such as living rooms, offices, hotels, etc.

390,00 € net
Voltage supply 24 V AC ⁄ DC (± 10 %)
Power consumption < 4.4 W ⁄ 24 V DC typical; < 6.4 VA ⁄ 24 V AC typical;
peak current 200 mA
Data points relative humidity, temperature, CO2 content of the air
as well as setpoint potentiometer
(no setpoint adjustment possible with Busch-Jaeger)
Measuring range, humidity 0...100 % r. H.
Operating range, humidity 0...95 % r. H. (without dew formation)
Deviation of humidity typically ± 3.0 % (20...80 % r. H.) at +25 °C, otherwise ± 5.0 %
Measuring range, temperature 0...+50 °C
Temperature deviation ± 0.8 K at +25 °C
Measuring range, CO2 0...5000 ppm
Sensor, CO2 optical NDIR sensor
(non-dispersive infra-red technology),
with manual calibration (via zero button) and
automatic calibration (fixed)
Measuring accuracy, CO2 ± 30 ppm ± 3 % of measured value
Temperature dependence, CO2 ± 5 ppm ⁄ °C or ± 0.5 % of measured value ⁄ °C
(whichever is higher)
Pressure dependence ± 0,13 % ⁄ mm Hg
Gas exchange by diffusion
Warm up time approx. 1 hour
Response time < 2 minutes
Sensor digital humidity sensor
with integrated temperature sensor,

low hysteresis, high long-term stability
Ambient temperature storage –35...+85 °C;
operation 0...+50 °C
Medium clean air and
non-aggressive, non-combustible gases
Bus protocol Modbus (RTU mode),
address range 0...247 selectable
Signal filtering 4 s / 32 s
Electrical connection 0.14 - 1.5 mm², using plug terminals
Enclosure plastic, standard colour pure white, glossy (similar to RAL 9010)
(other colours are possible on request with colour variants
depending on the respective light switch programme)
Installation in in-wall flush box Ø 55 mm
Long-term stability < 2 % in 15 years

± 1 % ⁄ year
Permissible air humidity max. 90 % r. H., non-precipitating air
Protection class III (according to EN 60 730)
Protection type IP 20 (according to EN 60 529)
Standards CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014 ⁄ 30 ⁄ EU
Manufacturer GIRA System 55
(other switch programmes, manufacturers, colours
and prices upon request

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10. - 15.03.2019

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Multi-functional duct sensor for monitoring and control of heating, ventilation and air-conditioning systems

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Good room climate is measurable! - AERASGARD® FSCO2 ⁄ FSTM-CO2 ⁄ FSFTM-CO2-Modbus

Our multifunctional room sensors for measuring temperature, humidity and CO2 concentration can now...
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