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Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

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TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

Lectrosonics WM Specifications

  • Operating Frequencies

    Block 470 (470.100 - 495.600MHz)

  • Channel Spacing

    100kHz

  • Frequency Selection

    Control panel mounted membrane switches

  • RF Power Output

    Switchable; 50, 100 or 250 mW

  • Compatibility Modes

    Digital Hybrid Wireless (400 Series), 200 Series, 100 Series, Mode 3 , Mode 6, IFB

  • Pilot Tone

    25 to 32kHz; 5kHz deviation (in 400 Series Mode)

  • Frequency Stability

    +/-0.002%

  • Deviation

    +/-75kHz max. (in 400 Series Mode)

  • Spurious Radiation

    60dB below carrier

  • Equivalent Input Noise

    -120 dBV (A-weighted)

  • Input level: If set for dynamic mic

    0.5 mV to 50 mV before limiting
    Greater than 1 V with limiting

  • Input level: If set for lavaliere mic

    1.7 muA to 170 muA before limiting
    Greater than 5000 muA (5 mA) with limiting (electret Mic)

  • Input level: Line level input

    17 mV to 1.7 V before limiting
    Greater than 50 V with limiting

  • Input Impedance: Dynamic Mic

    300Ohms

  • Input Impedance: Electret Lavaliere

    Input is virtual ground with servo adjusted constant current bias

  • Input Impedance: Line level

    >2.7kOhms

  • Input Limiter

    Soft limiter, 30dB range

  • Bias Voltages

    Selectable 2 V, 4 V or Off

  • Gain Control Range

    44dB; panel mounted membrane switches

  • Modulation Indicators

    Dual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation

  • Controls

    Control panel with LCD and four membrane switches

  • Low Frequency Roll-off

    Adjustable from 35 to 150Hz

  • Audio Frequency Response

    35Hz to 20kHz, +/-1dB

  • Signal to Noise Ratio: No Limiting

    Off: 103.5dB
    Normal: 107.0dB
    Full: 108.5dB

  • Signal to Noise Ratio: With Limiting

    Off: 108.0dB
    Normal: 115.0dB
    Full: 113.0dB

  • Total Harmonic Distortion

    0.2% typical (400 Series mode)

  • Audio Input Jack

    2.5 mm locking micro; threaded for stainless sleeve on WP connector

  • Antenna

    Flexible, unbreakable steel cable

  • Batteries

    1.5 Volt AA lithium

  • Battery Life: 250mW

    7.5 hrs Lithium (2 AA)

  • Battery Life: 100mW

    14 hrs Lithium (2 AA)

  • Battery Life: 50mW

    14.5 hrs Lithium (2 AA)

  • Emission Designator

    180KF3E

  • Dimensions

    2.98 x 2.55 x 0.77" / 75.69 x 64.77 x 19.56mm (including battery caps)

  • Weight

    5.33oz / 151.10g (with lithium battery)

About Lectrosonics WM

Enhance your audio recording capabilities with the WM Watertight Wireless Belt-Pack Transmitter, coupled with the M152/WP Lavalier Microphone, designed to thrive in the most challenging wet or dusty environments. This robust transmitter is engineered with O-ring sealed battery compartments and input jack, a compression-sealed antenna port, and gasket-sealed control panel and back cover, ensuring durable and reliable performance even in the toughest conditions.

The WM transmitter is not only built to withstand the elements but also to deliver extended operating times with its dual AA battery configuration, offering twice the longevity of previous watertight transmitter models. The user experience is further refined with larger membrane switches, an intuitive control panel, and a highly visible, backlit LCD with a lockout option, all contributing to a seamless interface that professionals can rely on.

With selectable output power options of 50, 100, and 250 mW, users can optimize the balance between battery life and operating range, tailoring the transmitter's performance to the specific needs of each project. The machined aluminum housing is corrosion-resistant, adding to the transmitter's durability, while the water-resistant seals make it an ideal choice for use in wet environments.

The WM transmitter boasts a programmable compatibility mode, ensuring seamless integration with a wide variety of different receivers, enhancing its versatility. The innovative Servo Bias input circuitry, with selectable voltage from the LCD, caters to a diverse range of lavalier microphones, as well as dynamic microphones and line-level sources, providing high-quality audio transmission tailored to your equipment.

To ensure the highest audio fidelity, the transmitter features a DSP-controlled analog audio limiter with more than 30 dB of range, offering exceptional overload protection and maintaining low distortion. The dual release envelope of the limiter ensures acoustic transparency, preserving the natural dynamics of the audio signal.

The cutting-edge Digital Hybrid Wireless technology combines the best of digital audio with an analog FM radio link, delivering outstanding audio quality and the exemplary RF performance of top-tier analog wireless systems. This innovative approach eliminates compandor artifacts, expanding the potential applications of the transmitter to include the testing and measurement of acoustic spaces and musical instruments.

Watertight connections are a hallmark of this transmitter, with a recessed input connector that captures the O-ring on the microphone connector for a firm, watertight seal. The antenna is secured with a compressible strain relief under a flange, ensuring a watertight connection that stands up to the elements.

The transmitter's DSP-based pilot tone and compatibility features offer a new level of reliability in multichannel systems, reducing squelch problems and ensuring backward compatibility with all Lectrosonics IFB systems, 100/200 Series systems, and some analog receivers from other manufacturers.

For those operating multiple units in close proximity, the transmitter includes an output isolator to reduce RF intermodulation and protect the output stage from electrostatic shocks. This feature, often found in broadcast and commercial applications, underscores the professional-grade design of the WM transmitter.

Remote control capabilities are provided by the RM and RM2 remote control units, allowing hands-free setup and adjustment with audible tones. These remote units enable you to control audio input gain, frequency, lock or unlock modes, and sleep mode ON/OFF without disturbing talent or wardrobe, streamlining the production process.

In summary, the WM Watertight Wireless Belt-Pack Transmitter with M152/WP Lavalier Microphone, operating in Frequency Block 470 (470.100-495.600MHz), is the epitome of durability, high-quality, innovation, portability, and reliability. It is the perfect choice for professionals seeking a waterproof, high-performance audio solution for live events, ENG, film production, and more.

Lectrosonics WM Features

  • Robust watertight design with O-ring seals ideal for harsh, wet, and dusty environments
  • Selectable output power (50, 100, 250 mW) for tailored battery life and range optimization
  • Backlit LCD with intuitive controls and lockout option for a user-friendly interface
  • Compatible with a wide range of receivers thanks to programmable compatibility modes
  • Advanced DSP-controlled audio limiter for high-quality sound and overload protection
  • Remote control capabilities with RM and RM2 units for convenient, hands-free adjustments

Warranty Information

This product has a limited warranty of 12 months.

Product Documents

User Manual

Key Features

  • Robust watertight design with O-ring seals ideal for harsh, wet, and dusty environments
  • Selectable output power (50, 100, 250 mW) for tailored battery life and range optimization
  • Backlit LCD with intuitive controls and lockout option for a user-friendly interface
  • Compatible with a wide range of receivers thanks to programmable compatibility modes
  • Advanced DSP-controlled audio limiter for high-quality sound and overload protection
  • Remote control capabilities with RM and RM2 units for convenient, hands-free adjustments

What's in the box:

  • Lectrosonics WM Watertight Wireless Belt-Pack Transmitter with M152/WP Lavalier Microphone
  • 2x Lithium AA Batteries
  • Belt Clip
  • O-ring Kit
  • Quickstart Guide
  • Lectrosonics 1 Year Limited Warranty