["The Dragino LWL04 is a LoRaWAN water leak sensor. If there is water between the bottom 3 metal posts, the LWL04 will indicate a water leak and send an uplink to the IoT server via the LoRaWAN network. The Dragino LWL04 does not need to be fixed, just placed on the floor. The bottom three metal columns can be adjusted in height. Only if there is water between the three metal columns will a short circuit alarm be triggered. The LWL04 can be activated from the bottom of the case with a magnet, and the light indicates when the magnet is nearby. The main unit has a sealing ring that can achieve IP65 protection. The LWL04 is powered by a non-rechargeable CR123A battery and is intended for long-term use. These batteries can deliver approximately 16,000 to 70,000 uplink packets, giving a battery life of 2 to 10 years. When the battery runs out, the user can easily open the case and replace it with CR123A batteries. The LWL04 sends data regularly every day and every time there is a water leak. It also counts the water leak times and calculates the duration of the last water leak. The user can also disable the uplink for each water leak event, instead the device can count each event and send the uplink periodically. Each LWL04 is pre-loaded with a set of unique keys for LoRaWAN registration, these keys are registered with the LoRaWAN server and the device automatically connects after power on", "LoRaWAN Class A v1.0.3", "Bands: EU868", "Water leak detection", "IP65 waterproof", "Supports wireless OTA update firmware", "Downlink to change configuration", "Uplink periodically and during water leak events", "CR123A 1500mAh battery", "Intelligent buildings and home automation", "Smart cities", "Smart factory", "1 x LWL04-EU868"]