【Wi-Fi Smart Control】 The wifi 433Mhz alarm siren adpots wifi technology that allows us to control remotely on APP anywhere and anytime easily 【Add 433Mhz Detector/Remote】Easily pair 433Mhz door sensor/PIR motion sensor/remote control (not included) to the siren, support Max 8pcs 433Mhz remote controllers, 24pcs 433Mhz wireless detectors 【Smart Home Function】The siren has many useful smart home functions like set timing for arm/home arm/disarm, options for adjust alarm volume and time, on/off of sound and light, can also be linked with other wifi devices (or siren itself) to create smart home scenes (such as "when the siren is alarming, a wifi bulb turns on") 【Home Security Function】Send alerts to APP when detectors are triggered, when someone trys to disassemble the siren, when it is connected with power or not, when you arm, home arm or disarm it. You can check all the alarm record on the Smart Life APP 【Buy Our 433Mhz Detectors】Search ASIN numbers:"B07DWTZSMT" and "B07DWWKT9B" to buy our 433Mhz motion sensors and door sensors, Manufacturer: aixi-SHS