This is a smart flood sensor (water leakage detector) based on wireless solution.While a water leak happens,the device will wake up the Wi-Fi connection to Wi-Fi router,send an alarm signal to your mobile phone via Wi-Fi network,in the case that the APP internet is available locally or remotely.The alarm is selectable as a notification on your mobile phone with bar display, streamer with tone, vibration based on the APP Notification setting on your mobile phone.There is an around 5-second delay from the state changes to notification on your mobile phone depending on the internet connection quality.The device is working as a scene to trigger other device action that are compatible in same APP such as to turn on/off plug and bulb. Features: Working in 802.11b/g/n Support Wi-Fi(smart Config) and AP (Access Point) mode for wireless connection Support battery level detection and low battery display Powered by 2 * "AAA" battery (not included), convenient to use Wall mounted installation and extended detecting cable to 90cm With Led indicates the working state Protect your home and valuables from annoying leaks and dangerous floods Easy installation and usage, suitable for home, office etc. Specification: Condition: 100% Brand New Material: ABS plastic Color: White Power supply 2*AAA battery,1.5V Radio frequency 2.4GHz-2.484GHz Radio protocol IEEE802.11b/g/n Transmitting power 802.11b:17dBmz± 2dBm@1Mbps 802.11g:15dBmz± 2dBm@54Mbps 802.11n:13dBmz± 2dBm@MCS7_HT20 Receiving sensitivity 802.11b:-91dBmz@11Mbps8%per 802.11g:-75dBmz@54Mbps10%PER 802.11n:-72dBmz@MCS7_HT2010%PER Vector error EVM 802.11b:≤35% 802.11g:-28dBm max. 802.11n:-28dBm max.@MCS7_HT20 Working temperature -10~+40℃ Storage temperature -20~+60℃ Relative humidity 8%~80% Package List: 1 * Alarm 1 * User Manual 1 * Installation Kit 1 * Sticker Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. .