MH-45B4B Noise Cancelling Speaker Microphone

The Motorola A13960507 MH-45B4B Noise-Cancelling Speaker Microphone is a heavy-duty remote speaker microphone designed for compatible Motorola and Vertex Standard portable two-way radios. Its noise-cancelling microphone helps improve voice clarity in loud environments, making it a practical audio accessory for professionals working around machinery, crowds, construction activity, and other sources of background noise.

The MH-45B4B allows users to transmit and receive communications without repeatedly removing the radio from a belt or carrying case. A large push-to-talk (PTT) button provides convenient radio operation, while the integrated speaker keeps incoming communications close to the user.

A built-in high/low volume control allows the speaker output to be adjusted for different working environments. The microphone also includes a 3.5 mm audio jack for connecting a compatible optional earpiece, providing greater flexibility when more discreet listening is required.

Designed for demanding professional applications, the MH-45B4B is well suited for construction, manufacturing, security, maintenance, utilities, property management, public works, and other environments where reliable hands-free radio access and improved voice clarity are important.

Key Features

• Heavy-duty remote speaker microphone

• Noise-cancelling microphone helps reduce surrounding background noise

• Large push-to-talk (PTT) button for convenient radio operation

• Integrated speaker for receiving radio communications

• High/low speaker volume control

• 3.5 mm audio jack for a compatible optional earpiece

• Coiled cable for convenient radio connection

• Clothing clip for shoulder or chest mounting

• Designed for demanding professional work environments

• Compatible with select Motorola and Vertex Standard portable radios

• Motorola / Vertex Standard part number: A13960507

• Model: MH-45B4B

Compatible Radios

Compatible models and radio families include:

• EVX-261

• EVX-531

• EVX-534

• EVX-539

• VX-160

• VX-180

• VX-231

• VX-261

• VX-264

• VX-350 Series

• VX-351

• VX-354

• VX-410 Series

• VX-420 Series

• VX-450 Series

• VX-451

• VX-454

• VX-459

Compatibility may extend to additional radios using the same accessory interface. Always verify your specific radio model before ordering.

Specifications

Manufacturer: Motorola Solutions / Vertex Standard
Part Number: A13960507
Model: MH-45B4B
Accessory Type: Remote Speaker Microphone
Microphone Type: Noise Cancelling
Push-to-Talk: Yes
Volume Control: High / Low
Audio Accessory Jack: 3.5 mm
Cable Type: Coiled
Mounting: Clothing / Shoulder Clip
Color: Black