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 * 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.