Fire suppressant dispersing devices are articles which contain a pyrotechnic substance, which are intended to disperse a fire extinguishing agent (or aerosol) when activated, and which do not contain any other dangerous goods. These articles, as packaged for transport, shall fulfil the criteria for Division 1.4S, when tested in accordance with test series 6(c) of section 16 of part I of the Manual of Tests and Criteria. The device shall be transported with either the means of activation removed or equipped with at least two
independent means to prevent accidental activation.

Fire suppressant dispersing devices shall only be assigned to Class 9, UN 3559 if the following additional conditions are met:

(a) The device meets the exclusion criteria in 2.1.3.6.4 (b), (c) and (d);

(b) The suppressant shall be deemed safe for normally occupied spaces in compliance with international or regional standards (e.g. NFPA2010);

(c) The article shall be packaged in a manner such that when activated, temperatures of the outside of the package shall not exceed 200 °C;

(d) This entry shall be used only with the approval of the competent authority of the country of manufacture.

This entry does not apply to "SAFETY DEVICES, electrically initiated" described in special provision 280 (UN 3268).