Precise smoke detection: The photoelectric sensor with advanced chipset detects smoke at an early stage and reduces false alarms. Reliable family protection: This TÜV-certified smoke detector reacts quickly and reliably to smoke development. Its loud 85 dB alarm wakes you up in good time in an emergency. 10-year integrated battery: No annoying replacement thanks to the energy-efficient, sealed 10-year battery - reliable protection around the clock. One-button test/silence: A simple press of the large test button enables a quick function test and temporary muting. Automatic self-test: The detector checks its function and battery power automatically every 60 seconds. This guarantees long-lasting safety. Robust and durable design: Made of heat-resistant ABS material with integrated insect protection - reliable performance without disturbing external influences.