The Dragino LWL04 is a LoRaWAN Water Leak Sensor. When there is water between the bottom 3
metal posts the LWL04 indicates a water leak event and uplink to IoT server via LoRaWAN
network. The Dragino LWL04 does not need to be fixed only placed on the ground. The bottom
three metal columns can adjust the height. Only when there is water between the three metal
columns it will cause a short circuit alarm. LWL04 can be activated from the bottom of the
housing with a magnet and the light will indicate when the magnet is close. Its main unit has
a sealing ring which can achieve IP65 waterproof. LWL04 is powered by CR123A non-rechargeable
battery and target for long time use these batteries can provide about 16 000 ~ 70 000 uplink
packets which result in 2 ~ 10 years battery life. After battery running out user can easily
open the enclosure and replace with CR123A batteries. The LWL04 will send periodically data
every day as well as for each water leak event. It also counts the water leak times and
calculate last water leak duration. User can also disable the uplink for each water leak event
instead device can count each event and uplink periodically. Each LWL04 is pre-load with a set
of unique keys for LoRaWAN registration register these keys to LoRaWAN server and it will auto
connect after power on.
