1.4. Available advanced functions: set the alarm volume to low, , medium and the alarm time in the range of 0 up to 30 minutes. Choose from 18 optional alarm ringtone types for a pleasant experience; turn the alarm on/off via the app for a more user experience. 2.3. Tuya Smart/Smart Life APP Compatible: Activate the alarm sensor via the app after adding it to the Smart Life app, and use it as a doorbell. Monitor alarm recordings in the app for added convenience, ensuring your home is more secure. Check the house condition remotely using the scenes you've set in the app. 3.2. Intelligent scene linking with Tuya gateway required: Connect the acoustic alarm with other smart home devices for smart scenes requiring alarm conditions. Schedule execution times to trigger the alarm at preset times according to your needs. For this Tuya ZigBee alarm, a Tuya ZigBee gateway is required, and due to its compatibility, other hubs are not recommended. 4. Key Features: Smart ZigBee Siren Alarm with Sound Light: The 2in1 alarm system features a 90dB sound and flashing light, designed for smart homes with realtime alerts to promptly detect home conditions.