M51 PTT(Push to talk), is a method of having conversations or talking on half-duplex communication lines, including two-way radio, using a momentary button to switch from voice reception mode to transmit mode. Both headset and radio should be connected in order to use PTT.
M51 PTT can be seamlessly integrated into your existing EARMOR M32/M32H Hearing Protector system or even the headsets of other verdors(MSA Sordin, 3M Peltor, etc..), allowing the operator to have the ability to use communication system in a high noise environment or war-zone.