Alarm Detects One Drop of Water! Leak Detector for your basement. The only water sensor equipment on the market that detects a single drop of water and small amounts of moisture. CAN DETECT AS LITTLE AS ONE DROP OF WATER--Giving you deserved, peace of mind! TRIMMABLE TO ACCOMMODATE YOUR SPECIFIC APPLICATION-Designed to fit underneath most kitchen sink and underneath most laundry machines, but can be trimmed to accommodate your specific application. PORTABLE - Uses a 9-volt battery (battery not included). LOW BATTERY CHIRP ALERT-Chirps every 5 seconds when battery gets low. OVER 6 FEET OF WIRE FROM ALARM TO SENSOR MAT-Place the sensor mat underneath your laundry machine and have enough wire to mount the alarm on the wall where you can comfortable change the battery.