RM250 IP67 Wired Remote Speaker Microphone with 2.5 mm Radio Connector

Add convenient shoulder-mounted push-to-talk and audio to compatible Motorola slim portable radios with the Motorola RM250 Wired Remote Speaker Microphone. Its thin, lightweight housing provides easier access to radio communications while allowing the connected radio to remain secured to a belt, pocket or carrying case.

The RM250 uses a 2.5 mm radio-interface connector designed for compatible MOTOTRBO SL Series and WAVE TLK devices. Because these radios do not provide accessory power through the connection, the microphone includes its own rechargeable 1,130 mAh battery.

The internal battery provides at least 22 hours of operation based on a standard 5/5/90 duty cycle and recharges in approximately two hours. Windporting technology helps reduce wind noise and prevents water from obstructing the microphone for clearer outdoor communications.

An IP67 rating provides complete dust protection and resistance to temporary water immersion. The RM250 also includes a separate 3.5 mm audio jack for connecting a compatible receive-only earpiece for discreet listening.

Package Contents

• Motorola RM250 wired remote speaker microphone

• Integrated 1,130 mAh rechargeable battery

• Attached cable with 2.5 mm radio connector

• Swivel clothing clip

• USB-A to Micro-USB charging cable

A USB wall power adapter and receive-only earpiece are not included.

Key Features

• Slim wired remote speaker microphone

• 2.5 mm connector for compatible Motorola radios

• Built-in 1,130 mAh rechargeable battery

• At least 22 hours of operation per charge

• Approximately two-hour charging time

• Windporting microphone reduces wind interference

• IP67 dust and water protection

• Withstands temporary water immersion

• Side push-to-talk button

• Separate 3.5 mm receive-only earpiece jack

• Automatically powers on and off when connected or disconnected

• Durable coiled cable

• Genuine Motorola Solutions accessory

• Motorola part number PMMN4125B

Compatibility

Designed for select Motorola radios equipped with the compatible 2.5 mm audio-accessory connection, including:

• Motorola MOTOTRBO SL300

• Motorola MOTOTRBO SL3500e

• Motorola MOTOTRBO SL7000 Series

• Motorola MOTOTRBO SL7550

• Motorola MOTOTRBO SL7580

• Motorola MOTOTRBO SL8550

• Motorola TLK 100

• Motorola TLK 110

• Select Motorola Evolve configurations

The separate 3.5 mm audio jack supports compatible receive-only earpieces, including:

• Motorola PMLN7560 Receive-Only Earpiece with Translucent Tube

• Motorola PMLN4620 Receive-Only D-Shell Earpiece

This microphone does not feature IMPRES technology, volume controls, programmable buttons or an emergency button. It does not carry an intrinsic-safety rating.

Compatibility is determined by the radio’s exact model and 2.5 mm accessory connection. A standard 2.5 mm jack does not guarantee electrical compatibility.

Ideal Applications

• Hospitality and event operations

• Retail and customer service

• Security and facility management

• Education and campus communications

• Transportation and fleet operations

• Warehousing and distribution

• WAVE PTX and nationwide push-to-talk users

Why Buy from Delmarva Communications?

Delmarva Communications has more than 20 years of experience supplying professional two-way radio and broadband push-to-talk equipment. Our team can help confirm whether the Motorola PMMN4125B RM250 and any connected receive-only earpiece are compatible with your SL Series or TLK radio.