This smoke dispenser is of lightweight construction, with a flexible swing frame which makes it ideal for testing virtually all types of smoke detectors at heights up to 9m. The unit uses a Aerosol smoke (42/111) or CO can (42/112); when activated by pushing the unit against the ceiling it sprays the smoke/co around the detector in a short controlled burst. The clear cup and diaphragm allows easy viewing of the detector LED whilst testing is under way.