Water Leakage Detection

SEZO WL is a compact low-power sensor for water leakage detection. The device is designed to detect water leaks in closed spaces.


SEZO WL is battery powered. The use of low power LoRaWAN technology extends the battery life of the device up to 3 years of SEZO WL use. This allows the device to be mounted in any place, even in a hard to reach.


It allows the devices to use unlicensed ISM band – which means no subscription fees are required. The devices using LoRaWAN send data either after being triggered by an event (e.g. movement, switching on the light) or based on a fixed schedule (e.g. every 15 minutes).


SEZO WL is integrated with the Orange Live Objects platform, which allow an easy access to the data collected by the device. It is also possible to connect SEZO WL to another existing platform used by your company.


  • SEZO WL is used to detect water leakage or condensation. The device is designed for closed spaces..
  • Thanks to four sensor strips, one small device is able to monitor possible leaks in four different zones.
  • SEZO WL will not only detect a water leak, but will also inform you which zone is affected by the leak and send you an alert.
  • The device will inform the user if it a leakage sensor’s damage is detected.
  • LoRaWAN technology enables long-distance data transmission – the distance between the device and the gateway can be up to 10 km.
  • The SEZO WL device is battery-powered, and thanks to the use of LoRaWAN technology for long-distance transmission, the life of SEZO WL batteries reaches even 3 years.

Get in touch with us to create a personalised system tailored to your needs. We will be happy to provide support starting with the concept phase and ending with the implementation of your system.

Use Cases


The SEZO WL device enables monitoring any possible water leakages inside buildings. Preventing water damage is critical to ensure optimal conditions for storage. It is especially important in case of FMCG (Fast Moving Consumer Goods) such as packaged foods, pharmaceuticals or toiletries, where the right level of humidity needs to be ensured.

Facility managers easily leverage SEZO WL and its features because of the seamless installation process. Thanks to the fact that the device is compact and battery-powered, all that needs to be done is to install it (by gluing or screwing it on) in a place where you want to monitor any possible water leakage, install the sensors, and the device is ready for operation.

SEZO WL is capable of sending data via LoRaWAN networking technology.


SEZO WL, thanks to its ability to detect water leakages is leveraged by office managers to ensure comfortable and stable working conditions for the employees.

This compact, battery-powered device informs about any water leakage or condensation on the premises. A water leakage can not only be a threat to the building’s construction, but also to people’s health. Long-term exposure to mold can result in Sick Building Syndrome (SBS) – people suffering from various illnesses (e.g. respiratory) caused by the building they work in.

SEZO WL has a built-in LED diode which makes the leakage location easier.

The device is capable of sending data via LoRaWAN networking technology.

Do you want to share information about SEZO WL with your company’s CTO?
Send a link to this page or attach a brochure in PDF format – available for download below.


Measured parameters

Water leakage or condensation

Operating temperature

-30 ÷ 60°C

Communication protocol

LoRaWAN v1.0.2, Class A device

Frequency and transmission power

868 MHz, max. 14 dBm

Data transmission interval

Default 24h heartbeat packets and flood-triggered alarms


AA 3.6V (1200 mAh)




40 g

Product dimensions

Length 161,5 mm, width 44,4 mm, height 23 mm

Contact us to create a system tailored to your requirements. We will be happy to provide support from the concept phase to the implementation of your system.

Our engineers are experienced in solving EMC problems - you can be sure that the tested device is EMC compliant.

aleja Zwycięstwa 96/98
81-451 Gdynia

+48 58 663 10 10

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SEZO IoT solutions based on LoraWan
SEZO sp. z o.o.  realizuje projekt dofinansowany z Funduszy Europejskich
Polish Agency for Enterprise Development
Poland ScaleUp Hardware & IoT Accelerator Program — Brinc
EU funds - SEZO Poland
Space3ac acceleration program - SEZO Poland
Brinc Accelerator - SEZO Poland
KPT ScaleUP - SEZO Poland