Analysis chamber for ducts suitable for housing a Comelit addressed or conventional smoke detector. Supplied with a pair of aluminum sampling tubes, each 27 cm long. Using the Pitot tube principle, it continuously samples the circulating air in the duct and analyzes it through the smoke detector inside the chamber. Installed externally to the duct, the analysis chamber has one inlet and one outlet tube; the detector inside analyzes the extracted air samples. To be completed with addressed smoke sensor Art. 41RFU100 and base Art. 41RBX020, or conventional sensor 43RFU100 and base Art. 43RBX000 / 001. Option to replace the standard sampling tube with long tubing Art. 48TCC120 (120 cm tube, can be cut as needed). Protection rating: IP30. Operating temperature: -10°C / +60°C. White ABS housing RAL9016 with transparent cover. Dimensions WxHxD (191x125x61 mm). Designed in compliance with EN 54-27 standard.