Bluetooth Low Energy

Wireless soil moisture and temperature logger

Wireless soil moisture logger is used to measure the amount of water in the soil. The sensor work with the Efento mobile application for Android and allow, among others registering soil moisture and temperature, notifications of a sharp decrease or increase in the amount of water in the soil, and generating automatic reports. The devices are powered by a battery that ensures their maintenance-free operation for a period of at least two years. Sensors communicate with smartphones using Bluetooth Low Energy technology. The maximum range of the sensor is approx. 100 m in an open space. The sensors record 40,000 measurements in their memory. The device comes in IP67 enclosure that protests it against the damage caused by water and dust.  The logger is equipped with an external Watermark soil moisture probe 3 m long and a temperature probe – 3 m.

You can use a free mobile application to configure the device and read the data from its memory.

  • Measurement range: 0 - 200 Centibar (kPa)
  • Temperature: -55 to +125°C, accuracy: up to 0.5°C in the range from -10°C to +85°C and up to 2°C in the range -55 to -125°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
  • 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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Newsletter (July)

Efento x IoT Creators.
Efento NB-IoT sensors have been successfully integrated with Deutsche Telekom’s platform iotcreators.com. How does it work? Set up an account at iotcreators.com -> Get a SIM card -> configure Efento sensor -> receive sensor’s messages to your server over REST.
New battery life time tool and protocol tool.
We have recently deployed a new set of tools that allow you to simulate the battery life time of Efento NB-IoT sensors depending on their settings and encode/decode protobuf messages sent by the sensors.
Efento on GitHub.
We have launched a GitHub profile, which contains code examples, tutorials on how to integrate Efento’s products into your solutions and useful tools. We will be regularly adding new tools and examples, so don’t forget to follow us!
“How warm is the water?”
This is one of the most common questions you can hear during Swedish summer. Learn how the municipality of Lerum, Sweden uses NB-IoT sensors to monitor and publish on the website current temperatures of water in the lakes.
Efento IoT Academy: BLE sensors integration.
Is it possible to integrate IoT sensors into your solution in less than 60 lines of code?

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