====== Water Resistant Front Panel ======

A water resistant front panel provides the ability to use the HMI outdoors or other environments where moisture would otherwise be problematic.

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====== Open-frame Model ======

Open-frame models provide the ability to mount the HMI to custom panel enclosures in commercial products such as medical equipment and other appliances.

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The CHA-0XXPR open-frame model is pictured below.

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===== Features of the Open-frame Model =====

  * More affordable than the water resistant models, and therefore suitable for mass production.
  * Due to its reduced thickness, it can be installed in more compact spaces.
  * Only RS-232C communication is supported.

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