Bus smoke and heat detector with controllable siren function for use in residential and business premises. With two independent sensors for smoke (optical) and heat (60 to 65°C). Type of detection (smoke, heat, smoke and heat, smoke or heat) adjustable via N-Link. Activation is signaled by LED and 85dB(A) warning tone (can be switched off). The built-in siren can also signal fire from other detectors in the system as well as other types of alarm with different signal tones for fire and burglary. The siren control can be limited to areas and the siren duration can be limited in time via N-Link. Tamper monitoring (when dismantling) and alarm memory function in the detector. Simple test and muting by pressing the housing or via N-Link. Complies with EN 14604, EN 54-7, EN 54-5/A1. Occupies one address in system 9000. Operating temperature: -10°C to +65°C. Power supply via bus, quiescent current consumption: 5mA, I-calc =60 mA. Power supply for autonomous operation (EN 14604) in the event of bus voltage failure: 3x 1.5V AA batteries, alkaline (included). Dimensions: D 126 x 50mm.