SONOFF indoor Zigbee Siren SNZB-09P

[High-decibel alarm]: Supports alarm volume up to 105 decibels; the sound can cover the entire floor, enough to deter unauthorized intruders, with 5 volume levels (including silent mode). [Suitable for notification scenarios]: You can select the notification sound tone and low decibel volume to activate scenarios used solely for notifications. [Multiple Configuration Options]: 10 built-in alarm sound effects to choose from, customizable alarm duration, and control over whether the alarm lights are on or off. [Linkage sensor alarm]: It can be linked with sensors such as door magnets, water immersion, and human presence. When the sensor detects abnormalities, it will trigger an alarm promptly. [Dual power supply mode]: Supports both Type-C 5V power and lithium battery operation, with a battery life of over 300 days in silent mode.