Help to detect any type of liquid leakage and protects your home against possible water damage 2.4Ghz wireless frequency for stable connection and signal transmission Enjoy up to 24 months of lifespan, durable for use With its small dimensions, it can fit anywhere conveniently Improve the security of your home with this sensor. Prevent water overflow on swimming pool or basement with real-time alerts to notify you of any water situation Compatible for iOS and Android systems Specification: Battery: 1*CR2 battery, 850mAh                                                        Standby current: 13uA                                                  Wireless Type: 2.4GHz                                         Protocol: IEEE 802.11b/g/n                                                     Wifi distance: 45m    Operating Temperature: 0℃ 60℃ (32°F 104°F) Free APP: Tuyasmart or Smart Life                                         Support systems: Android and for iOS                                                                                                    Product size: 69x69x34mm