Click here for my Microphone Book.
Everything you ever wanted to know about microphones, and more!

ChurchWireless.com™

Solution Graphics


WM Watertight Belt Pack Transmitter


Selectable output power to maximize battery life or operating range (50, 100 or 250 mW)

Machined aluminum, corrosion resistant housing

Water resistant seals for use in wet environments

LCD interface with lockout option

Programmable compatibility modes for use with a wide variety of different receivers

Servo Bias input circuitry with selectable voltage


Designed for wet or dusty environments, the WM transmitter features O-ring sealed battery compartments and input jack, a compression sealed antenna port and gasket sealed control panel and back cover. Dual AA batteries provide twice the operating time of earlier watertight transmitter designs. Larger membrane switches and control panel and a highly visible, backlit LCD enhance the user interface.


The WM is offered with M152WP Lav Microphone or as an upgrade, with the Voice Technologies VT500 Water Lav Microphone


With a pair of Lithium AA cells at 50 mW the WM runs for 13 hours. At 100 mW it runs for 10:45 hours. At 250 mW it runs for 5:45 hours. Alkaline AA cells may be used but are not recommended for 250 mW operation.


For a complete wireless mic system select a Digital Hybrid transmitter, and a Digital Hybrid receiver.


Download the WM Datasheet here.


Download the WM Manual here.


Specify block 470, 19, 20, 21, 22, or 23 frequency range.

The WM with belt clip, antenna, O-ring kit, and M152/WP microphone is $1459.00 plus shipping. With the Voice Technologies VT500 Water Lav Microphone upgrade it is $1749.00 plus shipping. Ground shipping in the 48 states is $20.00 for one belt pack or $30.00 for two.

Purchase WM belt pack transmitter with M152/WP microphone using PayPal. (PayPal Confirmed shipping address in 48 continental USA states only.)

Purchase WM belt pack transmitter with VT500 microphone using PayPal. (PayPal Confirmed shipping address in 48 continental USA states only.)


Email me at Sales@AudioToolbox.US. I accept all major credit cards and eChecks through PayPal, or you may pay by Money Order sent to the address below.

Go to Mipro wireless microphones

Go to Superlux wired microphones

Go to TestMic Precision microphones

Go to SoundFirst Home Page.

Go to my Technical Page.

Go to TheMicrophoneBook.com Home Page.

Go to AudioToolbox.US Home Page.

Go to TEF20.com Home Page.

Last Edited 11/9/2017

Entire Site Copyright 2017 by Ray A. Rayburn. All rights reserved.
Sound First™, SoundFirst.com™ Superlux.US™ ChurchWireless.com™ AudioToolbox.US™ and TestMic.com™ are Trademarks of Ray A. Rayburn