PTT-E Product information Our sound-proofed headset for noisy environments • Useability for loud environment with up to 27 dB sound attenuation • Robust design for rough environment • Clear transmission with the noise cancelling function • Easy adaption to a wide range of application such as radio or GSM-R TECHNICAL BASICS Working principle Working principle Noise Cancelling Frequency response Frequency range Sound pressure level ADDITIONAL INFORMATION Weight Temperature range More information about the Product and the corresponding accessories, connection cable and scope of delivery can be found at www.imtradex.de.