Sennheiser EW 100 G4-ME4-A1 Wireless Lavalier System

The Sennheiser 509640 is a wireless lavalier microphone system from the EW 100 G4-ME4-A1 series that gives presenters, moderators, and instructors the freedom to move while keeping every word easy to hear. The set brings together a compact bodypack transmitter, the discreet ME 4 clip-on cardioid microphone, and a true diversity receiver that sits in a sturdy metal enclosure. This combination delivers hands-free convenience and reliable audio that cuts through stage noise and room acoustics.

A 42 MHz tuning range with 1680 selectable UHF frequencies lets you find a clean channel even in busy RF environments. Up to 20 systems can operate at the same time, making the kit a practical choice for multi-speaker events. Pairing the transmitter and receiver is quick thanks to an infrared link, while the back-lit LCD interface keeps critical settings easy to read on a dark stage. With up to 30 mW of adjustable RF output and a transmission range that reaches 100 meters, voices stay strong whether the user is pacing a conference room or crossing a large auditorium.

Setup is straightforward: mount the receiver in a rack with the supplied kit, connect it to the sound system, clip the lavalier mic to a lapel, and you are ready to present. The system suits conference centers, lecture halls, houses of worship, video shoots, and small theaters—anywhere clear speech and dependable wireless performance are required.

Highlights:

• Complete wireless lavalier system centered on the ME 4 cardioid microphone
• True diversity receiver in a metal housing for dependable signal stability
• 42 MHz bandwidth with 1680 selectable UHF frequencies
• Supports up to 20 compatible channels running simultaneously
• Fast transmitter-to-receiver synchronization through infrared link
• Operating range of up to 100 meters
• Adjustable RF output power up to 30 mW for strong, interference-resistant transmission
• Package includes bodypack transmitter, rack-mount kit, antennas, and accessories