A small, easily installed indoor sensor. 

Measure indoor temperature, humidity, light, and acceleration wherever you need. Connect it to any LoRaWAN® network, configure it how you like via NFC or downlink configuration. Its small size makes it discrete and easy to install.

This product is not recommended for new installations. 

Indoor environment measuring

Inside the ESM5k, you will find four internal sensors: a temperature sensor, a humidity sensor, a light sensor, and an accelerometer. Besides the indoor environment, it is also possible to measure movement by acceleration.  

The ESM5k is wireless and battery-powered. That makes this device very easy to manage and very fast to install. 

  • Size : 60 x 35 x 20 mm
  • Accuracy: ± 0.5°C, ±2%rh, ±100mg
  • Resolution: 0.1°C, 0.1%rh, 15.6mg
  • Approx. range: 5km
  • 3.6V  1/2AA lithium battery

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Near Field Communication

All Elsys sensors are equipped with NFC for easy configuration with an Android phone. You can change the sample rate, data rate, encryption keys, triggers, activation, and much more.

All changes can be done with our application Sensor Settings

Battery lasts up to 10 years

Our sensors have a remarkably good battery life time. For this sensor, it can last up to 10 years. How long the battery actually will last depends on the sample interval, transmit interval, data rate, and environmental factors.

Your are welcome to use our online battery life time calculator.