Shure A120S In-Line On/Off Switch (No Connectors, Requires Soldering)
Shure A120S In-Line On/Off Switch (No Connectors, Requires Soldering) is backordered and will ship as soon as it is back in stock.
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Shure A120S In-Line On/Off Switch (No Connectors, Requires Soldering)
Product Overview
The Shure A120S is an in-line switch that adds on/off, push-to-talk, and cough-button control to wired microphones in commercial AV systems. It also provides transmitter relay keying, making it useful for paging, intercom, and presenter microphone applications where local muting is required. Supplied unterminated, the A120S is intended for AV integrators who solder it into a custom microphone cable run during installation.
Product Description
The A120S installs in-line on a wired microphone cable and gives the talker direct control of the audio signal through a switch that can operate as a latching on/off, momentary push-to-talk, or cough button. The same switch can be wired for transmitter relay keying, allowing it to trigger external equipment such as a mute relay or paging system. Because it ships without connectors and requires soldering, it is a flexible building block for custom installs rather than a plug-and-play accessory — the integrator terminates it to match the connector standard and switching behavior the system design calls for. This makes the A120S well suited to conference rooms, courtrooms, and house-of-worship systems where presenters need reliable local control over a fixed microphone.
Key Features
- Multiple Switching Modes — A single switch supports on/off, push-to-talk, and cough-button operation, covering the common talker-control needs in installed AV systems.
- Transmitter Relay Keying — The switch can be wired to key an external relay, enabling integration with paging, intercom, or mute-control equipment.
- In-Line Installation — It mounts directly in the microphone cable run, putting control at the talker position without a separate control surface.
- Custom Termination — Supplied unterminated for soldering, it lets integrators match any connector standard and wiring scheme required by the installation.
Technical Specifications
| Brand | Shure |
| Model | A120S |
| Type | In-line microphone switch |
| Functions | On/off, push-to-talk, cough button, transmitter relay keying |
| Termination | Supplied unterminated (requires soldering, no connectors) |
Related in-line Shure accessories: the Shure A15AS in-line attenuator and the Shure A15RF in-line RF filter.
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