the RF hazard warning sign is used on microcell facilities tp notify occupational visitors, who may not be from a RF background, to the presence of a RF hazard where the general public limits are exceeded. It may be used where the visitor has thepotential to enter the hazard zone using a ladder, or mechancial aid.

there are three versions of the sign to cater for differing RF hazard zone dimensions. The sign installer must ensure that the correct version of sign is used which is appropriate for the hazard.