Real-time alerts and smart monitoring - Real-time alerts to your smartphone: when a door or window is opened or closed, the sensor sends an instant notification to your phone. - Clear alarm notifications: you will receive an alert on your phone whenever the sensor is triggered, making it easy to monitor doors, windows, cabinets, drawers, or other locations you want to be notified about. 2.4 GHz WiFi only and reliable connectivity - Works with 2.4 GHz WiFi: connects via the smartphone app in a 2.4G WiFi environment. If your router supports only 5 GHz, this device will not connect. Smart home compatibility and automation - Alexa and Google Home compatible: can be used with other smart devices through Smart Life for automated control and routines. - App-based management: battery level is monitored and low-battery reminders are sent automatically via the app. Power and setup details - Battery powered: the sensor flap requires two AA batteries (not included). - Battery alerts: when the battery is running low, you receive automatic reminders in the app to replace them. Usage scenarios - Front door monitoring: know immediately when someone enters or exits your home. - Cabinet or drawer security: track access to valuable or sensitive items such as medicines, documents, or valuables. - Home office or storage areas: monitor closets or rooms to confirm when doors or drawers are opened or closed. Notes - Requires the 2.4 GHz WiFi network for connectivity. - Compatible with Alexa, Google Home, and Smart Life enabled automations.