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.
Specifications
| 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) |
| Other | |
| 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).
Installation
Detailed installation and planning instructions can be found in the Installation Guideline.
Mounting
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.