Condensation can be a seasonal problem in warehouses during the colder months of the year.
Detection Systems, such as Aspirating Smoke Detectors and Optical Beam Detectors can give false alarms due to condensation and this happens in slightly different ways.
With Optical Beams, due to different temperatures of air mixing, condensation can form on both ends of the Beam (Detector and Reflector or Transmitter and Receiver).