Smoke detector WiFi Tuya Smart S-DY2 Effective smoke detection Very loud signaling sound 80dB Optical signaling LED Operation on one battery even do 2 years Works with 2,4GHz WiFi router as part of the Tuya or Smart Life application. Notification of smoke detection Immediately and in many ways Loud signalling Built-in piezoceramic transducer signals with a force of up to 80dB integration of more than 11000 different devices 30 categories (control, air conditioning, monitoring, etc.) develops new features and supported devices every day available for free for Android and iOS Dedicated Tuya Smart app - easy installation and hassle-free operation. Wherever you are, you can control the safety of your property! Technical specification: Communication: WiFi 2,4GHz Antenna type: built-in Weight netto: 60g Low battery notification Power Supply: 9V/6LR61 battery Detection field: 360degrees Dimensions: 106x106x42mm Application: Tuya , Smart Life , Alexa