UDM-240ZH Wireless Speaker Microphone/Intercom

  • 2.4 GHz ISM Band – Zigbee Wireless
  • License-free
  • 16 Channels, 64,000 ID’s Per Channel
  • Communicate up to 160′ with another Speaker Mic
  • No limit to number of connected mics in intercom or repeater mode with a UDM-240ZV
  • Desktop Charger
  • Displays Channel & Volume Status
  • Earphone Jack 3.5mm (Receive Only)
  • Group/Individual ID Mode Selectable
  • IP67 Certified


UDM-240ZH Group Communication System

UDM-240ZH Wireless Speaker Microphone/Intercom

The UDM Series is a great 2 in 1 communications device that provides reliable, license-free radio communications between palm mics and at the same time, also has the ability to communicate through a mobile radio via repeater connection. This interactive device is ideal for tour groups, speaker presentations, restaurants, job training, in-person consultations, and for anytime you need wireless radio communication outside of your vehicle.

Unlike other listening devices that are receive-only, the UDM lets participants respond using their device as a speaker microphone. As a result, all participants can enjoy an interactive conversation.

The UDM is ideal for high noise situations when combined with one of our receive-only ear pieces. Everyone involved has the ease of casual conversation with high-quality audio. Not only can everyone be heard, but the units have a range of up to 160 feet of communication, allowing the flexibility for everyone to move around in a tour type environment.

The UDM-240ZH package comes complete with the speaker microphone, charger, and 110V power supply.

When our UDM System’s UDM-240ZV repeater is tethered to your vehicle’s mobile radio or office base station, the UDM-240ZH palm mic can function as a tough, wireless PTT mic for the mobile up to 320’ away. While in wireless communication with your mobile radio using one PTT button, you will also have the ability to have a private conversation to other UDM mics 160’ away from each other on a separate PTT button through its “Intercom” mode.

If you have questions about the Maxon UDM Series, please contact us.



TA-EMI – Earbud Piece Speaker w/3.5mm Straight Plug
TA-EH6 – “C” Style Earphone w/3.5mm Straight Plug
TA-ET4 – Discreet (clear audio cord) In-Ear Speaker w/3.5mm Straight Plug
TA-ET4E – Discreet (clear audio cord) “C” Style In-Ear Speaker w/3.5mm Straight Plug


UDM-AN – Mag Mount 2.4 Ghz Antenna; SMA; Use with UDM-ZV


UDM-CHB – Charger – Desk Top or Vehicle Mount (PSUDM-110)
UDM-MB – Mounting Bracket for use with UDM-CHB


UDM-CJA – 12VDC Lighter Adapter – 12-24V Input; 5V 800mA Output


UDM Series Spec Sheet – DOWNLOAD
UDM-240ZV User Manual – DOWNLOAD
UDM-240ZH User Manual – DOWNLOAD
UDM-240ZV Interface Manual – DOWNLOAD

How to Buy

Our radios are for professional use and most require an FCC, IC (Canada), or CE Red (Europe) license to import and/or operate.

Please contact us to find a local Maxon dealer:

Call: (800) 456-2071

Email: maxon@maxonamerica.com

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