The IR33 PASSIVE offers reliable protection against noise pollution without electronic components thanks to high-quality absorption materials. It is suitable for situations where protection and concentration are required, such as hunting or shooting sports.

The IR33 ACTIVE expands the functions of the IR33 PASSIVE with its ANR technology and one-sided control panel, among other things. With its external microphones, it proves to be a reliable partner in situations where noise protection is of key importance. The active noise protection function dampens suddenly occurring loud noises, while ambient noises such as voices remain audible.

The IR33 INFAN is an all-rounder that is ideal for all emergency services, as it fits under all common helmet models. Thanks to the adaptive ANR technology, disturbing ambient noise is minimized even more effectively and any leaks are detected and eliminated. The built-in NFMI technology also enables double hearing protection. The IR33 INFAN can be individually adapted to any scenario thanks to the optional microphone inputs on both sides.

The IR33 TANK is characterized by its flexible adaptation to changing operational requirements and is ideal for different emergency forces and situations. The adaptive ANR technology efficiently minimizes disturbing ambient noise and an additional spacer ensures increased passive insulation. This is particularly advantageous for use in vehicles and can be easily attached or removed by the user in order to optimally prepare for the respective operational scenario.