Efficient, convenient and network-enabled

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


Satisfied customers drive our business

An overview of our references

Learn more

Good room climate is measurable!

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


All quite relative

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


VOC in focus

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


Für jede Anwendung die richtige Lösung [Translate]

Room humidity, tempe­rature and CO2 sensor


The maintenance-free microprocessor-controlled AERASGARD® RFTM - LQ - CO2 and RCO2 - W is used to monitor the entire room climate. In order to do this, the measurands air humidity, temperature, CO2 concentration as well as air quality (VOC) are measured. All parameters are converted to standard signals (0 -10 V or 4...20 mA). As an option, a measurand can be shown continuously in the illuminated display. By measuring all four measurands in one device, it is possible to monitor and control the entire indoor climate effectively. The RFTM-LQ-CO2 and RCO2-W measures CO2 in the range from 0...2000 ppm or 0...5000 ppm, VOC in one of three selectable sensitivity levels LOW ⁄ MEDIUM (default) ⁄ HIGH, temperatures in the range from 0...+50°C as well as the relative air humidity of 0...100 % Elegant housing made of plastic, with snap-on lid, base with 4-hole attachment, for fitting to vertically or horizontally installed flush-mounted boxes, with predetermined breaking point for surface-mounted connection. Relative humidity (% r.H.) is the quotient of water vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature. A digital, long-term stable sensor as a measuring element for relative humidity and temperature guarantees exact measurement results. The air quality is determined based on a (VOC) mixed gas sensor. The CO2 content of the air is determined by means of optical NDIR sensors (non-dispersive infra-red technology).

CO2: 0...2000ppm / 5000ppm switchable
Temperature: 0°C...+50°C, Humidity: 0...100% r.H.
Output: 0-10V / 4...20mA switchable, with Changeover contact

Type Kommunikation Equipment Display CO2 measuring range 1. Temperature range Arbeitsdruck PN max. Buttons Colour Control Enclosure Colour Enclosure_material Function Kommunikation Measuring range relative humidity Messbereiche CO2 Movement Output Output type Printing Prozessanschluß (SW) Rod length Rohr Ø DN Sensor-Toleranz Feuchte Sleeve length Temperature-measuring range for insertion length Channels Sensor VOC measuring range Free cable length Enclosure name Cable material Measuring range pressure Item No. Price
RFTM-CO2-W change over contact 5000 ppm CO2 1501-61B6-7301-200 295,80 €
RFTM-CO2-W DISPLAY change over contact 5000 ppm CO2 1501-61B6-7321-200 337,83 €

S+S Regeltechnik - Benefits to the power of five

Learn more

S+S Regeltechnik News

Exhibition Newsshow all


ISH Messe Frankfurt – S+S Regeltechnik looks forward to meeting you!
11. - 15.03.2019

Stand 10.3 A71
At the ISH, the world's leading trade fair for "The Bathroom Experience,...


SPS IPC Drives – S+S Regeltechnik will be there
26. - 28.11.2019

Be our guest at Europe's leading trade fair for electric automation from 27 to 29 November 2018. ...

Overview of all exhibition dates

Product Newsshow all


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

This bus capable and calibratable pressure measuring transducer enables the control of differential...


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...

Exhibition News

ISH | 11. - 15.03.2019 | Stand 10.3 A71


Newsletter Subscription

Stay always informed about our products and news from S+S Regeltechnik