Humidity Sensor


The Wireless Humidity Sensor measures the surrounding humidity and temperature, and wirelessly transmits the result to a Cloud Connector (Gateway) via SecureDataShot™ technology. The Cloud Connector will relay the temperature and relative humidity readings to the DT Cloud.

The readings are performed at 15-minute intervals.

The Wireless Humidity Sensor has touch functionality for simple installation and use.

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.


  • 0.05 % RH resolution, 3 %RH absolute accuracy at 25 °C / 77°F between 20 and 80 %RH
  • 0.05 °C resolution, 0.4 °C absolute accuracy at 25 °C / 77°F
  • Touch functionality


Operating conditions 
Temperature range -40 to 85 °C / -40 to 185 °F
Recommended temperature range 0 to 50 °C / 32 to 122 °F, non condensing
Humidity at 25 °C  / 77 °F 0 to 100% relative humidity
Wireless communication 
 EU 868 MHz SRD/ISM band, SecureDataShot
 US 915 MHz ISM band, SecureDataShot
Certifications and compliance 
EU CE, WEEE, Batteries directive
US Certified to FCC and ISED regulations
FCC ID: 2ATFX-100541
IC: 25087-100541
Recommended storage conditions Cool and dry, near normal room temperature
Construction Sealed, Impact modified acrylic film
Size and weight 19 x 19 x 2.8 mm, 2.0 g
Lifetime Up to 10 years in the default configuration and standard environment
Wireless range 25 m typical indoor, similar to a WiFi network with an advanced WiFi router. Up to 1000 m in line of sight.
Product numbers and datasheets
101851 Humidity Sensor EU – Humidity icon
(No longer available for purchase)
 Datasheet Wireless Humidity Sensor EU 101851
101895 Humidity Sensor US – Humidity icon
(No longer available for purchase)
 Datasheet Wireless Humidity Sensor US 101895
102081 Humidity Sensor EU – QR code
 Datasheet Wireless Humidity Sensor EU QR 102081
102087 Humidity Sensor US – QR code
 Datasheet Wireless Humidity Sensor US QR 102087

See datasheet for detailed specifications.