BCL40 is a belt clip mounting accessory for Wisycom MTP40, MTP40S and MTP40S-UN bodypack transmitters. The clip is mounted to the transmitter housing using a fixed pin and a small screw. Installation requires a flathead screwdriver and may involve removing an existing clip with pliers. The mounting instruction notes a supplied screw and a spare screw (code VBCL40-K10) for service and maintenance, ensuring secure retention during operation.