Smoke alarm Dual Q pure white glossy The smoke alarms work according to the photoelectric scattered light principle without radioactive substances. The smoke alarms detect smoke development in good time and warn before the smoke concentration can become dangerous for people. The alarm is triggered by a loud pulsating alarm tone and a flashing LED. Features: Use only in private residential units or residential-like areas in accordance with DIN 14676. Q label: tested longevity and reduction of false alarms. Increased stability, e.g. against external influences. Built-in battery with a service life of up to 10 years. Type A according to DIN EN 14604. KRIWAN approval. Battery-operated combined smoke alarm and thermal detector. Different alarms for fire and heat alarms. Heat detection through maximum and differential function. Damped alarm signal (approx. 75 dB (A)) during function test. Integrated function button for e.g. alarm acknowledgement, function test and muting. Smoke detection can be switched off. Automatic self-test of smoke evaluation with contamination tracking. Contamination or fault display. In the dark, signaling delayed by up to 12 hours in the event of a technical fault. 'Low battery' display. Networking of up to 40 smoke detectors possible via wire. One module interface for three optional modules (KNX module, radio module, relay module) with simultaneous use of the network terminal.