Remote Push-to-Talk Footswitch for Mobile Radios

The Motorola RLN4856A is a genuine remote push-to-talk footswitch designed for compatible Motorola mobile-radio and visor-microphone installations.

It allows an operator to activate radio transmission using their foot, leaving both hands available for vehicle controls, dispatch tasks or other equipment.

When paired with a compatible visor-mounted microphone, the RLN4856A creates a convenient hands-free-style communication setup for fleet vehicles, control stations and specialized mobile installations.

Key Features

• Foot-operated push-to-talk control

• Allows radio transmission without holding a palm microphone

• Supports compatible visor-mounted microphones

• Leaves the operator’s hands available for other tasks

• Simple press-and-hold transmission control

• Suitable for vehicle and control-station installations

• Durable design for professional use

• Genuine Motorola Solutions accessory

Product Specifications

• Manufacturer: Motorola Solutions

• Model Number: RLN4856A

• Accessory Type: Remote push-to-talk footswitch

• Control Type: Momentary foot-operated PTT switch

• Connection Type: Wired

• Primary Application: Compatible visor-microphone systems

• Installation Style: Floor-mounted or operator-positioned

• Color: Black

Foot-Operated PTT Control

The RLN4856A provides a remotely positioned foot control for activating radio transmission.

To operate:

• Press and hold the footswitch to transmit

• Speak toward the connected visor microphone

• Release the footswitch to return to receive mode

The footswitch does not contain a microphone, speaker or radio transmitter.

Compatible Microphone Systems

The RLN4856A can be used with select Motorola visor-microphone configurations, including compatible installations using:

• Motorola GMMN4065D Visor-Mounted Microphone

• Other approved Motorola remote or visor microphones

Compatibility depends on the complete radio, microphone and wiring configuration. Confirm all component part numbers before ordering.

Compatible Radio Families

The RLN4856A supports select Motorola mobile radios, including compatible models from the:

• MOTOTRBO XPR 2500

• MOTOTRBO CM200d

• MOTOTRBO CM300d

• Motorola TLK 150

• Select Motorola MTM5000 TETRA mobile radios

• Corresponding regional Motorola mobile-radio families

Compatibility varies by model, rear-accessory connector and installation configuration.

Hands-Free-Style Communications

The foot-operated design can help operators:

• Keep both hands available for work

• Avoid repeatedly reaching for a palm microphone

• Maintain a consistent speaking position

• Reduce equipment around the dashboard

• Operate a radio from a seated control-station position

• Communicate while using compatible vehicle or workstation controls

“Hands-free” refers to operating the PTT without using a hand. The user must still press the footswitch before speaking.

Important Safety Information

The footswitch must be positioned and secured so it cannot:

• Interfere with accelerator or brake pedals

• Slide beneath vehicle controls

• Restrict operator movement

• Create a trip hazard

• Activate accidentally

• Interfere with safe vehicle operation

Professional installation is strongly recommended for vehicle applications.

RLN4856A vs. Emergency Footswitches

The RLN4856A is a standard push-to-talk footswitch used to initiate normal voice transmissions.

It should not be confused with a Motorola emergency footswitch designed to activate the radio’s programmed emergency feature. Confirm the required function before ordering.

Package Contents

• One Motorola RLN4856A remote push-to-talk footswitch assembly

Visor microphone, mobile radio and additional installation accessories are not included.

Ideal Applications

• Commercial fleet vehicles

• Utility and service trucks

• Transportation and logistics

• Construction equipment

• Dispatch workstations

• Control stations

• Motorola TLK 150 installations

• Custom hands-free-style radio systems

Always follow applicable laws and workplace policies regarding radio use while operating a vehicle.

Why Buy from Delmarva Communications?

Delmarva Communications provides genuine communications equipment backed by more than 20 years of industry experience. Our team can help confirm compatibility between your Motorola radio, visor microphone and external PTT control.