ALWAYS UPDATED - Stay informed of what's happening at home with this WiFi fire alarm. As soon as the fire alarm is triggered, you will receive a notification on the connected Tuya or Smartlife app so you can take immediate action. 10-YEAR BATTERY LIFE - The smoke detector is connected to a built-in lithium battery that has a lifespan of 10 years, eliminating the need to replace the smoke detector's batteries. ULTRA SENSITIVE SENSORS - Photoelectric sensors are more effective at detecting smoke from slow-burning fires, such as materials that produce a lot of smoke (e.g. cigarettes, electrical cables). Smoke detectors are less sensitive to false alarms caused by cooking fumes or steam. EASY INSTALLATION - The included screw set and instructions allow for quick and safe installation of the WiFi smoke detector. SAFETY IS IMPORTANT - The battery-operated smoke detector with a lifespan of 10 years is TÜV, CE and EN14604 certified. This means it meets the strictest standards and requirements