Conventional aspirating smoke detector. 1 aspirating channel: maximum duct length 50m. Up to 8 sampling holes. Integrated detection module. Sensitivity programmable from 0.10% to 2.00% obs/m. Alarm and fault outputs (optional Prealarm on TFRU-2). LOGIC·SENS algorithm to prevent false alarms. PIPE·GUARD air flow monitoring. Simplified installation with automatic standardisation, Plug&Play commissioning without the need for programming interfaces, 24V DC supply voltage, maximum current consumption 170mA at full load, protection rating IP20 (up to IP54), operating temperature from -20°C...+60°C, relative humidity from 10% to 95%. ABS casing. Dimensions (L x H x D) 140 x 222 x 70mm. Requires TFHB-TM base. VdS-approved.