Thearist MRCS M180 Quick Start Manual Download Page 2

INSERT BATTERY

PUT ON PSAP

STEP 2

STEP 3

STEP 1

VOLUME

The push button allows you to adjust the volume. There are 5 volume settings - you will 

hear three beeps when you reach the maximum and/or minimum volume.

  

PROGRAM PRESETS

Your PSAP includes four programmed settings to quickly adjust to different 

environments. Press and hold the “Up Volume” button for two seconds to select the 

next setting. You will hear one to four beeps corresponding to the four settings. Press 

and hold the “Up Volume” button again to cycle through the four settings.

 

1. Normal – equal amplification across all pre-programmed frequencies 

2. Noisy – reduces background noise (restaurant, wind and road noise)

3. Outdoor – decreases overall sound amplification

4. Meeting – increases voice frequency while decreases base and high frequency 

sound

BATTERIES

The proper battery size for your PSAP is 

Size 312

. You can order online at Amazon or 

pick up at your local drugstore or pharmacy.

Under normal use, your battery should last about a week. Make sure to bring a spare 

battery before you leave home. To conserve battery life, make sure to switch off (by fully 

opening the battery door) when you are not wearing. In addition, we recommend 

removing your PSAP from your ear and fully opening the battery door during sleep every 

night to conserve battery life. 

You will hear a beep when you reach

the maximum or minimum volume.

5

0

MAXIMUM

MINIMUM

Remove the sticky tab

from the new battery.

Wait 2 minutes so

battery can be exposed 

to air and activate.

Insert new battery into battery door.

Make sure the + (plus sign) is 

facing up.

Close the battery door. The

PSAP will turn on automatically.

Confirm the door is shut – there

should be a slight click.

TURN ON

To turn off the PSAP, simply

open the battery door.

TURN OFF

Place the PSAP behind your ear. 

The amplifier should have an ear 

dome attached.

Hold the bend of the amplifier wire 

between your thumb and index 

finger. The ear dome should point 

towards the opening of the ear canal.

Gently push the ear dome into your ear canal 

until the amplifier wire sits close to your head. 

Place the ear grip in the ear so it follows the 

contour of the ear. 

CHANGING THE EAR DOME

Everyone’s ear is unique! Your PSAP comes with different sized ear domes so pick 

the right size that suits your unique ear. Make sure you choose a comfortable fit that 

is not too tight; however, the more loose the fit, the more likely you may hear some 

whistling or reverb. 

  

STEP 2

STEP 3

STEP 1

Hold the amplifier and then pull

off the ear dome. 

Insert the amplifier exactly into 

the middle of the ear dome.

Push firmly to ensure that the 

earpiece is fastened securely.

Let’s Get Started

Press button to turn up volume.

Press and hold to change program setting.

Press button to turn down volume.

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