Upgrade design: 2 probes on the back to detect leaking water flowing to the ground; 1 probe on the front to detect drops from the pipe or tap. This advanced design allows you to predict water leaks faster and more effectively HIGH SENSITIVITY: As soon as the probes come into contact with water/liquid or even the slightest amount of moisture, they immediately emit a loud 90dB alarm and will sound until you dry the probe or the battery is empty. Effective reminder of wasted or leaked water Scope of application: This product is often used in places where water can run off. With the mini size, you can easily place your water alarm near the bathroom, kitchen, basement, garage, boat, water pipe. You can fight the flood or water leak in time to protect your belongings Easy to use: no wiring, no buttons, no programming, can be mounted on the wall or placed on the floor . Just unscrew the cover and install the battery. If the alarm sounds silently, please replace the battery