Welcome to our store！</br>1、The water sensor can detect water leaks or violations of preset limits. It uses Wifi to connect to the application and can be controlled remotely. 2、When the water detector detects a leak, it will sound an alarm within 1 second and send an alarm signal to the smartphone within 2‑10 seconds. 3、It can be used to monitor water leakage in washing machine room/kitchen/basement/aquarium etc. 4、It can also be used to monitor the preset water level limit of the bathtub/swimming pool, etc., 100dB alarm sound, 24 hours to protect your safety. 5、Simple steps, just connect to home Wifi (only applicable to 2.4G Wifi), when you work or travel, travel, etc., you can receive alerts and track the activities of wireless sensors. <p class="wang-edit-text"><p class="wang-edit-text"> Item Type: Water&nbsp;Leak&nbsp;Sensor Material: ABS Buzzer Decibel: 70+DB Radio Frequency: 2.4GHz-2.484GHz Battery Model: AAA batteryx2 (delivered without battery) <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Sensor 1 x Manual&nbsp; 2 x Screw 1 x Sticker Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br> 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-Minnanxin