Regulations
SOLAS Chapter II-2, regulation 13.3.2.5.1 as amended refers to the location markings for fire equipment and requires that they must be photoluminescent or illuminated by emergency lighting.

Installation
Each item of fire fighting equipment should be marked with the appropriate symbol. Where various types of equipment are stored at one location, 'Fire point' signs may be used. When equipment in an alleyway or public room is stowed in a recess or locker, then a panoramic sign, mounted well above head height should be used to enable the equipment to be identified from a distance. Colour shape and size

Any space protected by a fixed gas ‘blanketing’ fire extinguishing system must have all entrance doors and hatches marked by the appropriate sign.
5876KJPV & 7545KJPV

All elevator entrances should be marked with sign. 6300JJPV.