Protect your home with the SMART+ Smoke Detector featuring a reliable photoelectric sensor and triple alarm system with a loud audible alarm (>85 dB), flashing red warning lights, and push notifications via the SMART+ App. Contamination compensators reduce false alarms caused by dust and dirt. Designed for seamless integration with other SMART+ devices, it performs regular self-tests, monitors battery status and Wi-Fi connection, and keeps you informed even when away. With over 5 years of battery life (CR123) and compact wireless design, installation is simple and stress-free.