Bus smoke and heat detector with controllable siren function for use in residential and commercial spaces. Equipped with two independent sensors for smoke (optical) and heat (60 to 65 °C). Detection types: smoke, heat, smoke and heat, or smoke or heat adjustable via N-Link. Activation is indicated by an LED and an 85 dBA alarm tone, which can be silenced. The built-in siren can signal fire alarms from other detectors in the system as well as other types of alarms with different tones for fire and burglary. Through N-Link, siren control can be limited to specific areas, and the duration of the siren can be time-limited. Tamper monitoring during disassembly and alarm memory function in the detector. Simple testing and silencing by pressing the housing or via N-Link. Complies with EN 14604, EN 54-7, EN 54-5A1. Occupies an address in the 9000 system. Operating temperature: -10 °C to 65 °C. Operating voltage via bus, standby current consumption: 5 mA, I-calc = 60 mA. Power supply for standalone operation EN 14604 in case of bus voltage failure: 3 x 1.5 V AA batteries, alkaline included. Dimensions: 126 x 50 mm. 9000SID.