HXLZYF Home Alarm Systems, House Alarms Security System with Phone Alert (Support 5G, 2.4G Wifi), Alarm Siren, Door/Window Sensors, Remotes, work with Alexa, for House Apartment Office, Expandable

Home alarm systems - Smart APP system can add additional door and window sensors, motion detectors, wireless doorbells and water detectors. The alarm can be controlled anytime and anywhere through the APP system. It supports expansion up to 100 sensors and 4 remote controls. No subscription fees required