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is a wifi enabled cloud security alarm system including a wifi hub to which all the sensors will connect via wireless connection, door/window contact sensors, motion sensors, remote controller, and a waterproof doorbell button/panic button. There is also a built in strobe siren that sounds at 80 decibels, although you can customize what the alert is for each sensor. Because it is wire free, the system is easy to remove and take with you, if you want. Get it from Amazon: OXA Smart Wireless Sensor Alarm System. COOWOO
ST30 Professional Wireless Smart Home Security Alarm System DIY KitView in galleryThis smart OXA sensor alarm system features a DIY installation in under 15 minutes. The entire system is easily set up with your smartphone simply by downloading the app, scanning the QR codes in the user manual, or through the app store/Google play.