SMART+ Alarm Siren with WiFi Technology

Function: Smart home alarm siren with 90dB warning tone, flashing red warning light and push notification via app, no light source Settings: 11 alarm tones and 3 volume levels selectable, alarm duration adjustable from 10 seconds to 30 minutes, offline warning Control: SMART+ app for Android 8.0+ and iOS 14.0+, compatible with Amazon Alexa and Google Home, WiFi 2.4GHz required Power supply: USB connection for continuous operation, optional backup protection with 2x CR123A backup batteries, USB-C cable included Compatibility: Works with SMART+ sensors, detectors, and cameras, IP20 for interiors, diameter 64mm, compact, Weight: 0.2535316013 pounds, Manufacturer: LEDVANCE