A clip-on module having a specialized housing design, probe contacts, switches, various advertising modes, and various configurations of signal repeaters is disclosed. The module is utilized via attachment to a specialized garment worn by a human patient. To properly apply the housing to the garment, a user will squeeze the module to open using tactile features embedded within the housing, locate the module, and then press-clamp the module to close and attach it. A plurality of probe contacts within the module have sharpness requirements for penetrating one or more layers of the garment while still maintaining low resistance, and will work with a backing material for probe.