1. a key switch control, turn the switch on when needed and turn it off when not needed 2. sensitive. When the detector detects the excess, it gives an alarm sound of up to 130 decibels with a quick response of 0.1 seconds to remind the owner to take action 3. equipped with 1 meter ultra-long detection line, easy to detect 4. energy saving, low power consumption, standby to 2 years. Product name: water leak detector water level alarm Power mode: 6f22 battery (excluding this product) Product use: kitchen, bathroom, heating, warehouse, store, workshop and other places. colour: white Material: ABS size: 98x46x22mm Package Contents: 1 x Alarm Only the above package content, other products are not included. Note: Light 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store