CO2 Sensor


The Wireless CO2 Sensor periodically measures CO2 (ppm), temperature (°C/°F), relative humidity (% RH), and barometric pressure (Pa/bar) in the surrounding air and wirelessly transmits the result to nearby Cloud Connectors (gateways) via the SecureDataShot™ protocol. Cloud Connectors relay sensor data into the DT Cloud infrastructure. From here, data can be integrated into other services using our developer APIs or viewed directly in DT Studio

EU and US variants

This sensor is available in two variants, one for the EU and one for the US, due to different certifications, compliances, and wireless communication.


Operating conditions 
Temperature range 0 to 50 °C / 32 to 120 °F
Recommended temperature range 0 to 50 °C / 32 to 120 °F
Humidity 0 to 95% relative humidity
Technical specification
Carbon Dioxide (CO2)

Sensor Technology: NDIR

Range: 0 to 5000 ppm

Typical Accuracy: ± (30 ppm, +3% of reading), max ± (45 ppm,

+3% of reading)


Sensor Technology: CMOS

Range: 0 to 50 °C / 32 to 120 °F

Typical Accuracy: ±1°C / 1.8°F

Relative Humidity

Sensor Technology: CMOS

Range: 10 to 95% (non condensing)

Typical Accuracy: ± 3%


Sensor Technology: CMOS

Range: 500 to 1110 hPa (mbar)

Typical Accuracy: ± 1 hPa (mbar)

Wireless communication 
 EU 868 MHz SRD/ISM band, SecureDataShot
 US 915 MHz ISM band, SecureDataShot
Certifications and compliance 
US Certified to FCC and ISED regulations
FCC ID: 2ATFX-102540
IC: 25087-102540
Recommended storage conditions Cool and dry, near normal room temperature
Construction Material Polycarbonate (PC) 
Size and weight 95 x 66 x 25 mm, 116.0 g
Lifetime Up to 10 years in the default configuration and standard environment (Batteries are replaceable)
Wireless range 100 m (328 ft) typical indoor. Up to 2000 m (6500 ft) in line of sight.
Product numbers and datasheets
102521 Wireless CO2 Sensor EU
102522 Wireless CO2 Sensor US

See datasheet for detailed specifications.
 Datasheet Wireless CO2 Sensor EU/US

Installation process


Battery Replacement