Lectrosonics MCABRLTA5MUWP is an adapter, TA5F to micro phone jack. To adapt both 2 & 3 wire lavaliere mics and line level inputs that are properly wired for a Lectrosonics 5 pin transmitter to a Lectrosonics MM400/b/c transmitter or a WM transmitter. The locking mini plug includes an O-ring water seal, however, the 5-pin jack is not watertight since it is protected by only the rubber sleeve on the microphone cable connector.