The 300m figure reflects open, unobstructed conditions — a straight sightline between transmitter and receiver with nothing dense in between. Inside a real museum, expect that number to shrink depending on what's in the way: stone walls, metal display cases, multi-floor layouts, and crowded rooms all absorb or reflect the 2.4GHz signal, so effective range in a typical gallery setting tends to land closer to 50–150m rather than the full 300m.A docent steps into a gallery
