This smart detector can not only detect smoke but also carbon monoxide. You can connect to the Tuya app to receive alarms, which is smart and saves your time. Try it, it won't disappoint you. Features: Carbon monoxide sensors and infrared photoelectric sensors are processed by microcomputer control technology, which has the characteristics of good stability, low power consumption and high sensitivity. Wide applications: suitable for gas water heaters, bedroom, living room, parking lot, school, library, factory, office, hotel, etc. nearby. With sound and LED light, two alarm functions, which can respond quickly, when the detector triggers an alarm, it will emit an alarm sound of >. 85 dB, which gives you a better using experience. Tuya APP remote checking: After connecting with Tuya APP, you can check and receive the alarms through the app even if you are not at home. Easy to install with the mounting bracket and screw kit, also made of noble material, you don't need to change it