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, must fulfil the criteria for Division 1.4S, when tested in accordance with test series 6(c) of Section 16 of Part 1 of the UN Manual of Tests and Criteria. The device must 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 must only be assigned to Class 9, UN 3559, if the following additional conditions are met:

a) the device meets the exclusion criteria in 2;1.5.2.4 b), c) and d);

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

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

This entry must be used only with the approval of the appropriate national authority of the State of manufacture.

This entry does not apply to UN 3268 Safety devices, electrically initiated described in Special Provision A115.