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ETS MSP-1 Manual

Microphone mute switch

MSP-1 Microphone Mute Switch

The MSP-1 is a flush mount, stainless steel, mute switch with an LED status indicator for use with

ETS SM1 series microphones. The MSP-1 is typically used in interview or interrogation rooms

when it is required that the microphone be turned off on occasion.

Cable Run

Run a 22 gauge, stranded, two conductor shielded cable between the MSP-1 and the microphone

and the MSP-1 and the monitoring equipment. The MSP-1 can be located anywhere along the

cable run between then microphone and interface equipment. Keep total cable run length at 1000

feet or less and away from power sources, light fixtures and electrical equipment. Connect (red)

power to the + terminal, the audio signal (black) to the "audio" terminal and ground (shield) to the

– terminal.

The MSP-1 can be surface or flush mounted on walls, cabinets or furniture. For flush mounting,

cut a 2 ¼" by 2 ¾ " hole in the mounting surface to allow room for the circuit board and mount the

MSP-1 to the surface with screws. A single gang electrical box can also be used for surface

mounting.

When the toggle switch is placed in the upper position (LED located at the top), the LED is Green

and the microphone output is not muted (on). When the toggle switch is placed in the lower

position, the LED lights Red and the output is muted (off).

Table of Contents

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Page 1 MSP-1 Microphone Mute Switch The MSP-1 is a flush mount, stainless steel, mute switch with an LED status indicator for use with ETS SM1 series microphones. The MSP-1 is typically used in interview or interrogation rooms when it is required that the microphone be turned off on occasion.
Page 2 Warranty All ETS products carry a one year parts and labor warranty. This warranty does not cover damages as a result of misuse, improper handling of the unit or exposure to extreme temperatures or moisture. At its discretion, ETS reserves the right to repair or replace this unit under the conditions of the warranty. If you experience problems with your equipment call ETS at: 505-888-3923 to obtain a return authorization number.