Wireless open / close sensors

Wireless open / close sensors monitor the state of a machine, door or any other object that changes its state. Open / close sensors are used for instance to check whether the medical refrigerator is opened or if the warehouse door has been closed. Moreover these sensors can be also used as a general I/O sensors, which can detect the state of an alarm output of a device connected to it. Efento’s wireless open / close loggers use Bluetooth Low Energy, NB-IoT and LTE-M technologies to send the data to Efento Cloud or any other cloud platform.

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Newsletter June 2026

Custom dashboards in Efento Cloud
Data presentation just got a major upgrade! Discover the latest Efento Cloud update, featuring fully customizable dashboards that let you visualize your sensor metrics exactly how you want them.
Efento NB-IoT loggers now available with external power supply - USB-C (IP30 enclosure), 9-26V DC terminal (IP67 enclosure)
Go beyond battery limits! Discover how the external power supply option for Efento NB-IoT loggers enables near-real-time data streaming, supports power-hungry 4-20 mA sensors, and triggers instant cloud notifications the moment a blackout occurs.
Seamless Integration with Akenza
Expand your IoT ecosystem! Efento 4-20 mA analog data loggers are now officially integrated with the Akenza platform. Check out our step-by-step tutorial to learn how to seamlessly stream your sensor data via CoAP.
Case Study: Smart Water Level Monitoring - Hungary
See Efento in action. Read our latest case study to discover how our partner in Hungary built a robust, real-time water monitoring system utilizing Efento loggers.
New Features in the Efento iOS App
iPhone users, this one is for you! You can now configure all Efento devices directly from your iOS mobile application, making onboarding to your Efento Cloud account faster than ever. Update your app today to unlock these features!

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