Temperature Sensor with Data Backfill

Temperature Sensor

The Wireless Temperature Sensor with Data Backfill periodically measures Temperature (°C/°F) and wirelessly transmits the result to nearby Cloud Connectors (gateways) via the SecureDataShot™ protocol. Cloud Connectors relay sensor data to the cloud via cellular or ethernet connectivity. From the cloud, the data can be integrated into other services using REST APIs and webhooks or viewed directly in DT Studio (web application).

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.


  • High accuracy (±0.25°C after calibration)
  • Can store up to 100,000 measurements­
  • Software verification level Class III with accuracy class 0.5


Measurement range -40 to 85 °C | -40 to 185 °F
Sensor technology CMOS
Sensor accuracy

The accuracy of the sensor depends on the temperature.

See the datasheet for detailed information.

Measurement resolution


Temperature drift

0.04°C per year (max)

Data backfill

If the sensor goes offline, it will start storing temperature measurements locally until the connection to the cloud is restored. 

Offline storage: Up to 100,000 datapoints

Practical example: A sensor with a 15-minute heartbeat and 30-second sampling rate in a stable temperature environment can store data for 1 month before it starts overwriting data.

Operating 6 Storage Conditions
Operating conditions Temperature: -40°C to 85°C (-40°F to 185°F)
Humidity: 0 to 100% RH (non-condensing)
Storage conditions Cool and dry, near normal room temperature
Wireless Communication
Radio protocol SecureDataShot™
Radio frequency EU: 868 MHz ISM band
US: 915 MHz ISM band
Transmit power < 100 mW
Wireless Range  
Indoor 25 m | 82 ft
40 m | 131 ft w/Cloud Connector (2nd Gen)
Indoor with range extender 100 m | 328 ft
150 m | 492 ft w/Cloud Connector (2nd Gen)
Cellular Communication
Transmit Power EU: Cat 1 LTE FDD B1/3/7/8/20/28
US: Cat M1 LTE FDD B2/B4/B5/B12/B13/B25/B26/B66/B85
Communication Standard EU: Power Class 3 (23dBm±2dB)
for LTE FDD bands
US: Power Class 5 (21dBm±1.5dB)
for LTE FDD bands
Mechanical Properties
Size 19 x 19 x 3.5 mm | 0.75 x 0.75 x 0.14 inches
Weight 3.0 g (± 0.5 g) | 0.11 oz
Material Impact-modified acrylic film
Mounting method Adhesive
IP rating IP68
Certification & Compliance

IC: 25087-100541
FCC ID: 2ATFX-10054

EN12830 Accuracy class: 0.5 in the range -30°C to 55°C
Verification level: Class IIIb (according to WELMEC 7.2) ATP-MUC 1132TS_EN12830:2018

See the datasheet for detailed specifications.

Product Variants

Version SKU Region Datasheet
EU 102683 Europe Wireless Temperature Sensor with data backfill - Product Datasheet 1.3.pdf
US 102685 North America