【Wi-Fi Smart Control and Amazon Alexa Voice Control】 We can easily connect with wifi smart siren to wifi that allows us to control remotely on APP anywhere and anytime easily. When it is alarming, we will receive notifications on APP. We can also simply ask Alexa to arm the wifi smart siren 【Add 433Mhz Detector/Remote】Easily pair 433Mhz door sensor/PIR motion sensor/remote control to the siren, support adding max 24 wireless sensors and max 10 remote controls(can be paired with the 433Mhz sensors, can only be used with this remote, ASINnumber: B08SW1TFZ2) 【Powerful Functions on APP】This wifi siren allows us to do more on APP. We can pair sensors, set away arm/home arm/disarm/SOS on app, set alarm delay, check alarm record, can turn on/off the siren on APP. 【Create Smart Scenes】It can also be linked with other wifi devices on Smart Life APP to create smart home scenes (such as "when the siren is alarming, a wifi bulb turns on") 【Waterproof】The siren is waterproof, can be installed outside (power adapter is not waterproof), Manufacturer: aixi-SHS