Smart fire detector compatible with Tuya and Smart Life apps Wi-Fi smoke detector with replaceable battery [Easy Installation]: The smart smoke detector can be installed simply, stably, and wirelessly using the provided screws, eliminating the need for wiring or connection issues. The housing is made of ABS, a flame-retardant material with excellent corrosion and heat resistance. [Real-Time App Notification]: Works with the free "Tuya" and "Smart Life" apps. The XNY smart smoke detector can connect to the app via a 2.4GHz WiFi network. You can check the battery level on the app. When the smoke alarm sounds, you'll receive real-time notifications no matter where you are, so you can take immediate action. [Wide Detection Coverage]: The smart smoke detector is equipped with a 360° air intake photoelectric sensor that detects smoke from all directions. [Quick Response & Loud Sound]: When smoke or fire danger is detected, the red light on the detector will immediately flash and an audible alarm over 80 decibels will sound, loud enough to alert everyone in the room. [Energy-Efficient and Long-Lasting Battery]: Powered by a newly upgraded 9V lithium battery. Low power consumption, high sensitivity, and high stability. The XNY smart smoke detector has an extremely long service life.