Remote microphone-speaker IMPRES PMMN4094 with the “noise-canceling” function meets safety standard ATEX and is designed for use with explosion-protected radios of DP4000EX ATEX series. Physical characteristics: Microphone type: With noise cancelling, Frame size: Big, 2 PTT buttons, Swivel belt mounting, Connectors: 3.5 jack, Emergency call button, Configuration button. Operational characteristics: Volume control: Available, "Noise cancelling" function: Available. Environmental requirements: Safety standard: ATEX, Dust - / waterproof: IP64
