Aspriration smoke detection unit, 1-channel max. 8 sampling points and 50 meters of piping, on-board smoke detection element with settable sensitivity from 0.10% to 2.00% obs / m. Alarm and fault outputs (optional pre-alarm on TFRU-2). LOGIC · SENS algorithm to prevent false alarms. PIPE · GUARD airflow monitoring. Simplified installation with automatic normalization, Plug & Play commissioning without the aid of programming interfaces, 24Vdc power supply, maximum absorption 170 mA in steady operation, protection degree IP20 (up to IP54), operating temperature from -20 ° C to + 60 ° C , relative humidity from 10% to 95%, dimensions 140x222x70 mm. Requires TFHB-TM base. VdS approval.