The 12- and 48-button Mitel IP Programmable Key Modules (PKMs) extend the capabilities of the Mitel 5224 IP Phone with additional buttons and LED indicators. With these expansion modules, you can...
The chin strap fits the shell of the Protos® Integral. The chin strap can be attached to the prefabricated loops of Protos® using the insertion buttons.
Thanks to the strip guide on the neck shell, the chin strap will always fit smoothly. Moreover, it cannot slip under the Hearing Protection Support.
In case of daily use, we recommend replacing the chin strap every 1–2 years.
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