This is a strobe-only model.
Yeah: xenon Genesis remote strobes look identical to horn/strobes from the outside, but have no horn in them (no idea why Edwards used the same cover design on both kinds of models but yeah).
They probably manufacture a single cover that can be attached to either the strobe electronics or the horn strobe electronics. They might even use the same cover on remote horns if the strobe filler piece is attached to the electronics. The ceiling-mount strobes are different for historical reasons, as discussed here.
Well in any case it was still rather lazy of Edwards to not bother with a hole-less cover like they did with the Genesis ceiling strobes (the fact that they did with the latter makes it odd that they didn’t for the wall-mount models).
It probably was done as a costsaving measure for them, I assume
Well the way I see it if they could bother making one for the Genesis ceiling strobes they could do the same for the Genesis wall strobes (I suppose it doesn’t matter now though since with the current Genesis LED-series they did bother with hole-less covers for the remote strobe models).
Agreed, and now that I think about it, I wonder why other companies aren’t doing that, considering that many remote strobes such as the L-Series strobes are already designed to look similar to their horn strobe counterparts, and common grilles are already used for series such as the Eluxa series (for speakers, multitones, chimes, and low frequency sounders). One possible reason is that it confuses inspectors and gives occupants a false sense of safety if they expect the device to produce sound in an emergency.
Also, since the late 2000s, the B224RB and B224BI have used the same design as the B200S with the horn grilles, despite not containing horns. Unlike the case of the Genesis, this results in the bases being significantly bulkier, and it carries similar risks as above.