The Draeger FRT 1000 is a low-frequency 457 kHz radio transmitter and receiver both contained in the same handheld unit. The Draeger FRT 1000 is worn on the SCBA belt during fireground operations in conjunction with an integrated or stand-alone PASS device. When the firefighter stops moving for 60 seconds, it sends an electromagnetic distress signal that can be tracked by others on the fireground that are also wearing a Draeger FRT 1000. The signal transmission can also be activated manually by the distressed firefighter while issuing a Mayday. The low frequency distress signal transmits through walls and floors enabling fire fighters inside and outside the structure to rapidly track and rescue the downed fire fighter