[Professional design]: Smoke detector and carbon monoxide detector, when there is smoke or carbon monoxide in your home, the red LED will flash and give a loud alarm..[Intelligent identification of micro-processing]: When smoke and carbon monoxide gas leak, it can quickly identify smoke and gas and send out 85 decibel alarm to avoid dangerous accidents and ensure personal and property safety..[Smart App Monitoring]: With the help of the Tuya App, you can receive App reminders and check the battery level of the detector. Even if you are not at home, you can know what is wrong. The detector will self-check from time to time. You can observe the smoke alarm in the Tuya app on your mobile phone..[Low power design]: The detector is equipped with 2AA batteries, quiescent current: 10 (uA).[Easy to install and use]: The alarm can be easily installed through the mounting bracket. Hard wiring is no longer used, and it is very convenient to install in the home or bedroom-wall-mounted installation, including screws.