Smoke alarm Dual Q including base 230 V Increased quality criteria and technical developments in smoke alarms are represented on the market by the new Q test mark. The new Q label is an independent and manufacturer-neutral quality mark for high-quality smoke alarms that have been specially tested for long-term use. The latest generation of Gira smoke alarms meet the criteria of the new Q label quality mark. The smoke alarms work according to the photoelectric scattered light principle without radioactive preparations. 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. Construction type A according to DIN EN 14604. KRIWAN approval. Dual Q smoke alarm with mains voltage (230 V) for private residential areas. The mounting plate is not required for this article. The base with integrated power supply unit supplies the Dual Q smoke alarm with mains voltage (230 V). The supply or network cable is connected in the base. Contact is automatically established when the smoke alarm is placed on the base. The battery in the Dual Q smoke alarm automatically takes over the power supply in the event of a mains voltage failure. Possibility of networking up to 40 smoke alarms via a separate cable.