Desk Occupancy Sensor

Desk Occupancy Sensor

The Wireless Desk Occupancy Sensor uses a combination of temperature measurements and machine learning to determine if a desk is occupied or not based on changes in temperature created by the presence of people sitting at a desk. The result is wirelessly transmitted to nearby Cloud Connectors (gateways) via the SecureDataShot™ protocol. Cloud Connectors relay sensor data into the DT cloud infrastructure for forwarding to other cloud services using Data Connectors or use directly in DT Studio (web application).

EU and US variants

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


Operating conditions 
Temperature 0 to 50 °C / 32 to 122 °F
Humidity 10 to 90% RH (non-condensing)
Wireless communication 
EU 868 MHz SRD/ISM band, SecureDataShot
US/Canada 915 MHz ISM band, SecureDataShot
Certifications and compliance 
EU CE, UKCA, WEEE, Batteries directive
US/Canada Certified to FCC and ISED regulations
FCC ID: 2ATFX-100541
IC: 25087-100541
Battery Specification
Battery BR1225  (non-replaceable)
Lifetime Up to 8 years (standard mode), up to 3 years (Boost mode)
Storage conditions Cool and dry, near normal room temperature
Construction IP68, impact modified acrylic film 
Size and weight 19 x 19 x 3.5 mm, 3.0 g
Mounting method Adhesive
Wireless range¹ 25 m indoor (100 m w/extender)
Product numbers and datasheets
EU 102553
US/Canada 102554
Datasheet  Datasheet Wireless Desk Occupancy Sensor

See the datasheet for detailed specifications.
1) Based on standard ITU-R P.1238 (indoor) and ITU-R P.525 (free-space). 


Detailed installation and planning instructions can be found in the  Installation Guideline.


Install the sensor under the desk, approximately 2 to 4 cm from the edge, at the center where a person usually sits.

Clean the installation surface, peel the protective film from the back of the sensor, stick the sensor to the table, and press it firmly for a few seconds to ensure good adhesion.

To increase the wireless range between the sensor and the Cloud Connector, we recommend installing the sensor with a Range Extender accessory.

Settling Period
After the installation, the sensor needs a working day of data from the environment before it accurately determines the occupancy status of the desk.

Metal Desks
Installing the sensor on a metal desk will severely impact the wireless range of the sensor. Using the
Range Extender accessory with PN: 101707 can increase the performance when used on metal desks.

Factors that impact measurement accuracy
Unusual heating/cooling patterns or offline periods.