Zigbee Wireless Door and Window Alarm Sensor,120dB Requires PGST Hub (not 3rd-Party),Smart Life or Tuya APP Control,3 Years Battery Life,Easy to Install,for Basement,Garage,Warehouse

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• [How to Enable APP Control] You can purchase the PGST Gateway Hub (B0FQSFNJX6) to connect to WiFi. Using third-party Zigbee Coordinator devices may cause incompatibility issues, resulting in the inability to connect and control the device through the app.
• [Multi-functional Alarms Sensor] Door and window alarms only support pairing with PGST Zigbee Hub to access smart features through mobile apps (Smart Life or Tuya), such as low battery alerts, alarm duration settings, alarm volume adjustment, and other functions. Pairing with other Zigbee devices is not supported.
• [Two Alarm Notification Methods] You can connect the door sensor to WiFi through the PGST Zigbee Hub to access multiple practical functions via the app, or you can directly install and use it without Zigbee connection. In the latter case, it will only emit an alarm sound locally without remote functionality.
• [Easy and Convenient Installation] The Door & Window Alarms Sensor has no complicated installation requirements. Simply attach it with 3M adhesive tape and install it on doors or windows as needed to protect every entryway of your home.
• [Simple Maintenance Method] The Alarm Sensor only requires 2 AA batteries. Simply open the back panel for direct replacement, no additional maintenance effort needed. The larger size is due to longer battery life, making it suitable for warehouses, garages, basements, and other locations.