Wireless temperature monitoring set - Bluetooth Low Energy

The system consists of a base station (a smartphone with Android 4.4 or newer and equipped with Bluetooth 4.0) with a display, and wireless sensor that communicate with the station. The application installed on the base station stores temperature measurements and sends SMS/email notifications on exceeding temperature thresholds that define the safe temperature range.

  • Temperature: -35 to +70°C, accuracy: up to 0.4°C in the range from -20°C to +70°C and up to 0.5°C in the range -35 to -20°C
  • Measurement period: 1 minute – 10 days (configurable by the user)
  • The device stores 40,000 measurements in its memory, when the memory is full, the oldest measurements are overwritten
  • Battery ensures up to 5 years of maintenance-free operation
  • Add Efento Gateway and Efento Cloud to build a real time monitoring system.  The maximum distance between the sensor and the Gateway is 100 m in the open space and 20 – 30 m in the buildings
  • Use a free mobile application to configure the logger, read the data from its memory, generate reports and set alert thresholds
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- Bluetooth Low Energy temperature and humidity sensor
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Newsletter (January)

NB-IoT CO2 sensor released!
We recently released the NB-IoT CO2 sensor. It may be used to monitor the CO2 levels (400 ppm – 5000 ppm) in office spaces to prevent spreading of COVID-19 disease.
NB-IoT motion / presence sensor released!
Allows to detect motion (like regular PIR sensor used in alarm systems) or room occupancy (conference rooms, office spaces, etc.). User can configure the device to detect every single movement or set the number of movements in a time period required to detect the room occupancy
Preserving stained glass windows for the next generations
Discover how Efento NB-IoT sensors are used by the conservation team of St. Marien church in Lübeck (Germany) to monitor the environmental conditions.
Efento CoAP loader update
Efento CoAP loader provides an easy and quick way to integrate Efento NB-IoT sensors into custom solutions. We recently updated it to support all sensor types and all their features
IoT connectivity from space?
Rakuten and University of Tokyo exploring low Earth orbit satellites for IoT coverage. The joint R&D project will span the next four years and involve the creation of a satellite network to connect NB-IoT and LTE devices.

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