Motorola HKLN4601 Discreet Earpiece and Mic

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Item # PR-HKLN4601
Motorola HKLN4601 Discreet Earpiece and Mic
MSRP: $58.00
Sale Price: $45.00
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What is the HKLN4601?

The Motorola HKLN4601 is a genuine Motorola 1-wire surveillance earpiece kit with an in-line push-to-talk (PTT) microphone, compatible with most Motorola 2-pin business two-way radios including the CLS, DLR, DTR, RDX, and RM series. It is designed for hands-free, discreet communication — allowing users to transmit and receive audio without removing the radio from a holster or clip. The kit includes a clear acoustic tube and rubber ear tip for extended wear.

Specifications

Motorola HKLN4601 Technical Specifications
Specification Detail
Part Number HKLN4601 (also sold as HKLN4601A)
Accessory Type 1-Wire Surveillance Earpiece Kit with In-Line PTT Microphone
Connector Type 2-pin slim plug (dual-pin)
Wire Configuration Single wire (1-wire design)
Acoustic Tube Clear / translucent
Ear Tip Material Rubber
Color Black (body); clear (acoustic tube)
Dimensions 0.75 in. (W) × 8.5 in. (H) × 2.0 in. (L)
PTT In-line push-to-talk button
Microphone In-line, integrated with PTT
Ear Orientation Single-ear (over-the-ear hook with acoustic tube into ear canal)
Warranty 1-year manufacturer's warranty (Motorola Solutions)

Note on versions: In 2013, Motorola updated the HKLN4601 to a "B" version with a twist-on replacement acoustic tube. The A and B versions use different replacement tubes — HKLN4478A is for the A version and HKLN4478B is for the B version. They are not interchangeable.

What's in the Box

  • 1 × Motorola HKLN4601 1-wire surveillance earpiece with in-line PTT/microphone
  • Clear acoustic tube (attached)
  • Rubber ear tip
  • 2-pin slim plug connector (for radio connection)

Replacement acoustic tubes are sold separately. The compatible replacement tube for the current B version is the HKLN4478B.

Radio Compatibility

The HKLN4601 is compatible with Motorola business two-way radios equipped with a standard 2-pin audio port. Confirmed compatible models include:

For the full current compatibility list, refer to the Motorola Solutions product page for the HKLN4601.

Who This Product Is For

The HKLN4601 is used in any setting where staff need to communicate without interrupting an interaction, drawing attention, or reaching for a radio. Common deployment scenarios:

  • Retail and loss prevention: Security officers can stay in contact and coordinate across a sales floor without alerting persons of interest. The clear tube blends with most skin tones and professional attire.
  • Hospitality: Hotel concierge staff, front desk teams, bell staff, and event coordinators use surveillance earpieces to respond to requests without audible radio traffic disrupting the guest experience.
  • Food service and restaurants: FOH managers and event banquet staff use 1-wire earpieces to coordinate kitchen timing and guest flow during service.
  • Houses of worship: Audio-visual teams, ushers, and security/safety deacons use surveillance earpieces to manage services and events without visible radio equipment distracting attendees.
  • Event production and venues: Production coordinators, stage managers, and venue operations teams need hands-free communication that doesn't interfere with the audience or performers.
  • Healthcare facilities: Staff in clinical or patient-facing roles who need discreet coordination without disturbing patients. (Note: for HIPAA-covered environments, confirm that radio communications meet your facility's privacy policies.)
  • School and campus security: Safety officers monitoring campuses benefit from the discreet form factor for non-alarming communication during daily operations.
  • Film and broadcast production: Production assistants, script supervisors, and floor directors use surveillance earpieces as standard equipment for on-set communication.

Key Features

  • Single-wire (1-wire) design routes both audio and PTT through one cable, reducing bulk and wire management
  • In-line microphone and PTT button positioned on the cord between the radio and the ear, accessible without removing the radio from a holster
  • Clear acoustic tube routes audio from the microphone body to the ear canal, reducing the visible footprint of the earpiece
  • Rubber ear tip included for comfort during extended shift use
  • 2-pin slim plug connector compatible with a wide range of Motorola business radio models
  • Genuine Motorola accessory — not a third-party replacement
  • PVC-free construction
  • 1-year manufacturer's warranty from Motorola Solutions
  • Acoustic tube is field-replaceable (B version uses HKLN4478B twist-on tube)
  • Lightweight — 0.2 lb. shipping weight — suitable for all-day wear

Frequently Asked Questions

What radios is the Motorola HKLN4601 compatible with?
The HKLN4601 is compatible with Motorola business two-way radios that use a standard 2-pin audio connector. This includes radios in the CLS, DLR, DTR, RDX, RM, XTN, XV, XU, VL, and AX series, as well as many CP and Mag One BPR series models. A partial model list includes: CLS1110, CLS1410, DLR1020, DLR1060, DTR410, DTR550, DTR600, DTR700, RDU2020, RDU2080D, RDU4100, RMM2050, RMU2080, RMV2080, VL50, BPR40, CP100, CP150, CP185, and CP200. Always confirm the 2-pin connector on your specific radio before purchasing. The GP350 requires an additional adapter (HLN9482).
What is the difference between the HKLN4601 and the HKLN4477 or HKLN4478?
The HKLN4601 is the current production version that replaced the earlier HKLN4477 and HKLN4478 models. Functionally, they serve the same purpose — a 1-wire surveillance earpiece with in-line PTT/mic for compatible Motorola radios. The primary difference is the acoustic tube attachment method: the HKLN4477/4478 A version used a small brass tip and a black cap clip, while the HKLN4601B version uses a twist-on tube connection. Replacement acoustic tubes are not cross-compatible between A and B versions.
Can I replace just the acoustic tube if it breaks?
Yes. The acoustic tube on the HKLN4601 (B version, current production) is designed to be field-replaceable. The compatible replacement tube is the HKLN4478B, which uses a twist-on connection. The older HKLN4478A tube (flat brass tip style) is not compatible with the B version earpiece body and vice versa. Replacement tubes allow you to extend the life of the earpiece without replacing the entire unit.
Is the HKLN4601 a genuine Motorola accessory?
Yes. The HKLN4601 is a genuine Motorola Solutions accessory, not a third-party or aftermarket product. It carries a 1-year manufacturer's warranty from Motorola Solutions. techwholesale.com is an authorized Motorola dealer and has been since 1997, which means the product sold here includes the full factory warranty and is not gray-market merchandise.
Is the HKLN4601 suitable for use in a dental office?
It can be used in a dental office, but the standard over-ear hook design may conflict with PPE such as masks and loupes. Some dental professionals modify the earpiece by trimming the top portion of the acoustic tube and inserting the ear tip directly into the ear canal so the acoustic tube hangs down rather than looping over the ear. The microphone and PTT can then be clipped to the collar or scrubs. Because the ear tip is inserted into the ear canal, this earpiece is non-returnable for sanitary reasons once used.
How do I use the PTT button on the HKLN4601?
The PTT (push-to-talk) button is located on the in-line microphone/PTT module on the cord between the radio and the earpiece. To transmit, press and hold the PTT button and speak toward the microphone on the module — you do not need to speak into the earpiece itself. Release the PTT button to receive. The microphone picks up your voice from the cord module, while audio from the radio plays through the acoustic tube into your ear. This design lets users communicate without touching or even looking at the radio.
What is the warranty on the HKLN4601?
The HKLN4601 carries a 1-year manufacturer's warranty from Motorola Solutions. This covers defects in materials and workmanship under normal use. The warranty does not typically cover damage from misuse, physical damage, or incompatible accessories. For warranty service on a unit purchased from techwholesale.com, contact our support team or refer to Motorola's warranty documentation included with the product.

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External Resources

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