RM110 Remote Speaker Microphone, with 3.5mm Audio Jack, IP55

The Motorola PMMN4148A RM110 Remote Speaker Microphone provides convenient shoulder-mounted audio and push-to-talk operation for the Motorola MOTOTRBO R2 portable two-way radio, allowing users to communicate without repeatedly removing the radio from their belt or carrying position.

Designed with a compact and durable housing, the RM110 features Motorola Windporting technology to help maintain clear voice communications in windy and demanding work environments. Its loud, clear speaker makes incoming radio traffic easier to hear, while the integrated microphone and push-to-talk (PTT) button provide convenient access to transmit communications.

The RM110 features an IP55-rated design, providing protection against dust and water exposure encountered during everyday professional use. A low-profile swivel clip allows the microphone to be securely attached to a shirt, jacket, vest, or other convenient location while allowing comfortable positioning throughout the workday.

An integrated 3.5 mm non-threaded receive-only audio jack allows a compatible secondary earpiece to be connected to the speaker microphone for more discreet listening. This makes the PMMN4148A particularly useful in security, hospitality, event management, and other environments where users may need to hear radio traffic privately.

Ideal for construction, manufacturing, maintenance, utilities, security, property management, hospitality, transportation, and other professional applications, the PMMN4148A provides convenient access to radio communications while keeping the portable radio securely carried.

Key Features

• Compact wired remote speaker microphone

• Integrated push-to-talk (PTT) button

• Loud and clear speaker for received radio communications

• Motorola Windporting technology

• Helps maintain clear communications in windy environments

• IP55-rated protection against dust and water

• 3.5 mm non-threaded receive-only audio jack

• Supports compatible secondary receive-only earpieces

• Low-profile swivel clothing clip

• Compact 59 x 76 x 22 mm design

• Allows convenient communication without removing the radio from its carrying position

• Designed for professional and commercial environments

• Genuine Motorola Solutions accessory

• Motorola part number: PMMN4148A

• Microphone model: RM110

Compatible Radios

• Motorola MOTOTRBO R2

Compatible Secondary Audio Accessory

• Motorola PMLN8120 Receive-Only Clear Tube Earpiece with 3.5 mm connector

Important

The PMMN4148A features a 3.5 mm non-threaded receive-only audio jack. The jack is designed for compatible secondary listening accessories and does not provide an additional microphone or PTT connection.

When the secondary audio jack is not in use, the protective dust cover should remain closed to help maintain the speaker microphone's environmental protection.

The IP55 rating applies to the RM110 speaker microphone head.

Specifications

Manufacturer: Motorola Solutions
Part Number: PMMN4148A
Model: RM110
Accessory Type: Remote Speaker Microphone (RSM)
Connection Type: Wired
Push-to-Talk: Yes
Windporting: Yes
IP Rating: IP55
3.5 mm Audio Jack: Yes
Audio Jack Type: Non-Threaded, Receive-Only
Size: 59 x 76 x 22 mm
Belt / Clothing Attachment: Low-Profile Swivel Clip
Compatible Radio: MOTOTRBO R2
Compatible Earpiece: PMLN8120
Color: Black