ETS SM1-TRWCF Instructions

SM1-TRWCF Microphone Instructions

The SM1- is a high quality, 12VDC-24VDC powered, compact, tamper resistant, weather proof (IP55), surface mount,

omni-directional, pre-amplified microphone for use with DRVs, I/P cameras, etc. Note- the audio output of the SM1-

TRWCF is "line level" (0db).

SM1-TRWCF Microphone Placement

The SM1-TRWCF is designed for outdoor applications and can be mounted on any flat surface using the supplied tamper

resistant screws. Do not mount the microphone near air conditioning vents, light fixtures or electrical equipment. We

recommend pointing the microphone towards the ground so that water does not accumulate in the sound hole. The

SM1-TRWCF should be placed as close as possible to the subject of interest. The SM1-TRWCF is useable in the range of

3-25 feet but is dependent on the level of background noise in the area. Experimentation in the environment will determine

what distances work best.

Run a 22 gauge, stranded, two conductor shielded cable between the SM1-TRWCF microphone and the monitoring

device. Keep the cable run distance under 1,000 feet and away from AC power sources, light fixtures and electrical

equipment. Connect power to the + terminal, the audio signal to the "audio" terminal and ground to the – terminal. The

Ground of the power and audio signal must share a common ground for proper operation. See Figure 1 for connection

diagram.

The SM1-TRWCF has an adjustable output level. The SM1-TRWCF is shipped with the gain set at midrange. If the sound

at the "head end" is distorted, rotate the control counter-clockwise. If the volume at the "head end" is too low, rotate the

control clockwise.

Table of Contents

Do you have a question about the SM1-TRWCF and is the answer not in the manual?

Page 1 The SM1-TRWCF should be placed as close as possible to the subject of interest. The SM1-TRWCF is useable in the range of 3-25 feet but is dependent on the level of background noise in the area. Experimentation in the environment will determine what distances work best.
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.