Bosch PH-1 A4M Fire & Intrusion Detector

• The dynamic receivers have special mountings which resist shock, vibration and acoustic feedback. The ear cups are foam lined for added noise attenuation. The vented, foam-filled ear cushions combine comfort with a good acoustic seal. The receivers and ear cushions are field repairable.
• The headband has two (2) adjustments; the behind the head portion adjusts the pressure of the ear cups against the head, and is adjustable simply by applying pressure to the headband springs while wearing the unit; the over-the-head portion provides adjustment for different head sizes, and consists of mating hook and pile strips.
• The headset features a boom arm with a sealed ball-and-socket joint and flexible boom for precise microphone placement. The microphone cordage is completely concealed and protected within the boom arm.The headset features a boom arm with a sealed ball-and-socket joint and flexible boom for precise microphone placement. The microphone cordage is completely concealed and protected within the boom arm.

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