Description
Channel Selector Knob
OEM replacement channel selector knob for commercial portable radios.
The Motorola PMDN4101AR (also designated as PMDN4101) is a genuine OEM replacement channel selector knob designed for Motorola commercial portable two-way radios. Engineered to fit onto the top rotary channel switch shaft, the Motorola PMDN4101AR restores firm, tactile channel switching and clear detent feedback when navigating talkgroups.
Frequent channel changes, industrial wear, and accidental drops can strip or loosen control knobs over time. Replacing worn hardware with a genuine Motorola PMDN4101AR channel knob ensures positive engagement at each channel position, preventing accidental frequency drift during critical field operations.
Key Features & Benefits
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Direct OEM Factory Replacement: Exact fitment and color match for original Motorola radio housing specifications.
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Motorola PMDN4101AR Tactile Grip: Textured ridged exterior provides secure rotational grip in wet or gloved conditions.
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Positive Detent Alignment: Precision internal socket engages firmly with the channel shaft to deliver crisp tactile clicks.
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High-Impact Polymer Construction: Built from durable industrial-grade plastic to withstand daily torque and UV exposure.
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White Position Indicator: Molded white line mark allows fast visual confirmation of the active channel selection.
Specifications
| Attribute |
Details |
| Brand |
Motorola Solutions |
| Model/SKU |
PMDN4101AR (PMDN4101) |
| Product Type |
Channel Selector Knob |
| Material |
High-Impact Molded Polymer |
| Color |
Black with White Indicator Mark |
| Mount Type |
Push-On Rotary Switch Shaft |
Compatibility
Recommended Accessories
Matching Control Knobs
Active Portable Radios
Batteries & Audio Accessories
More Resources
Frequently Asked Questions
What is the primary function of the Motorola PMDN4101AR knob?
The Motorola PMDN4101AR is a replacement knob that attaches to the top channel switch shaft to allow users to switch operating frequencies and talkgroups.
Which Motorola radio models are compatible with the Motorola PMDN4101AR?
The Motorola PMDN4101AR is compatible with Motorola CP110, CP185, and EP350 portable two-way radios.
Are tools required to install the Motorola PMDN4101AR channel knob?
No tools are required. The Motorola PMDN4101AR features a push-on design that slides directly onto the radio channel switch shaft.
Is this the volume knob or the channel knob?
The Motorola PMDN4101AR is the channel selector knob. The companion volume/power control knob is part number PMDN4102AR.
Is the Motorola PMDN4101AR a genuine Motorola OEM part?
Yes, the Motorola PMDN4101AR is an original equipment manufacturer replacement component manufactured directly by Motorola Solutions.
How do I remove a damaged channel knob before installing the Motorola PMDN4101AR?
Firmly pull the old knob straight up off the metal shaft. Clear any debris from the shaft before pressing the new Motorola PMDN4101AR into place.
Warranty
1-year manufacturer's warranty.
