Water Level Alarm: Alerts you instantly when water levels exceed predetermined thresholds, ensuring safety and preventing water damage. Easy Installation: Comes with a user-friendly setup that allows quick installation and immediate operation. Versatile Applications: Suitable for a wide range of applications, including aquariums, irrigation systems, and water conservation projects. reliable water level monitoring and environmental safety and efficiency. Due to different batches, there may be differences in product appearance and printed text, which not affect use Color: Blue Material: PCB Package Contents: 1 x Water Level Sensor Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.