The Telex ELM-22S is a professional sub-miniature electric condenser lapel microphone engineered for discrete, high-quality voice capture in demanding applications. Its primary design purpose is to provide clear, reliable audio for wireless microphone bodypack transmitters, making it an ideal choice for broadcast presenters, theatrical performers, public speakers, and corporate presenters who require a nearly invisible yet robust audio solution. The microphone's exceptionally small and lightweight capsule allows it to be easily concealed under clothing or attached discreetly to lapels, ties, or costumes without compromising the subject's appearance or movement. Despite its miniature size, it is built to professional standards, featuring a durable metal housing and a flexible, reinforced cable assembly designed to withstand the physical stress of daily use and frequent handling.

Acoustically, the ELM-22S utilizes an electric condenser design that requires bias voltage (typically 3-10V) provided by a compatible wireless bodypack or mixer. This design yields a smooth, tailored frequency response optimized for speech intelligibility, with a presence rise in the critical upper-midrange to ensure clarity and cut through ambient noise or music. Its omnidirectional polar pattern provides consistent pickup from all directions, which is beneficial when the speaker may turn their head, though it also necessitates careful placement to minimize clothing rustle and chest cavity resonance. The included windscreen and various mounting clips—such as alligator clips or magnetic holders—aid in secure, optimal positioning and provide some protection against plosive bursts and mild wind noise.

The microphone terminates in a 3.5mm sub-miniature locking connector, a standard for many professional wireless systems, ensuring a secure physical and electrical connection to the transmitter. The cable is thin, flexible, and available in various standard lengths to route neatly from the chest to a bodypack transmitter. The ELM-22S balances the need for sonic quality, physical discretion, and operational reliability, making it a go-to choice for audio engineers and productions where both audio transparency and visual subtlety are paramount. Its robust construction ensures it can deliver consistent performance in the challenging environments of live events and daily broadcasting.