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• With the NoiseGard™ active noise compensation turned off, the headset can be used
as a conventional headset
• Power supply for NoiseGard™ is provided via on-board power supply system,
cigarette lighter socket or battery pack
• Fail safe operation in case of power failure
• Supply voltage for the NoiseGard™ system is processed by the in-line electronics in
the connecting cable
• Made in Germany, 5-year warranty (HMEC 450: 10-year warranty)
Product variants
HMEC 352 NoiseGard™ headset
The HMEC 352 differs from the HMEC 350 in the following features:
• Connection of microphone and NoiseGard™ electronics via PJ-068 plug
HMEC 355 NoiseGard™ headset
The HMEC 355 differs from the HMEC 350 in the following features:
• No Mono/Stereo switch
• Connection of headphones, microphone and NoiseGard™ electronics to the on-board
power supply system (12–35 V DC) via XLR-5 plug