The NTN8370A and NTN8371A are noise reduction ear tube adapters for surveillance earpieces. The NTN8370A kit is for extreme noise conditions, and includes a foam ear tube piug that fits in one ear and a foam earplug that fits in the other ear. The NTN8371A kit is for low noise conditions, and includes a rubber ear tip that fits in the ear. Both kits include a swivel lapel clip, an earphone coupler, a transparent audio tube, and a 90° ear tube fitting. 

A. General
After the Installation has been pertormed, save all unused iterns and these instructions, as yeu may wish to restere the surveillance accessory to its original condition at a later time. 

B. Disassemble Surveillance Earpiece
Refer to Figure 2 and pertorm the following steps: 

1. Remove the rubber ear tip by pulling it out and away from the ear tip adapter.
2. lf an earloop is in place, it will fall free trom the ear tip adapter.
3. Remove the ear tip adapter from the earphone by applying enough sideways force to unsnap it from its secure position. Note: A thin clear plastic washer 15 on the face of the earphone. Do not remove lt.

 


Figure 2. Surveillance Earpiece

1. Align the earphene coupler of the ear tube accessory with the earphene of the surveillance earpiece.

Note: Make sure that the clear plastic washer is en the face of the earphone. 
2. Press the earphone coupler (hole side) onto the mating surface of the earphene until it snaps together.

Figure 3.

After assembling the ear tube accessery te the surveillance earpiece, attach the ear tube accessory to a lapel, left or right as you prefer. Then follow the procedure for your application (high-noise or low-noise accessory). 

High-neise accessory NTN8370A

• Use your finger tips to squeeze the foam ear tube plug, fairly tight around the center black tube.
• While the ear tube plug team is compressed, insert it into the ear canal far enough to be cmmfortably worn.

Note: Within a few secends after the ear tube insertion, the compressed foam will conform to the shape of your ear canal. 
• To further reduce the noise level, compress the foam earplug as you did the foam ear tube plug. While the foam earplug is compressed, insert lt inte the other (open) ear canal far enough to be comtortably worn. Within a few seconds after the earplug insertion, the cempressed team will conform to the shape ot your ear canal.

• insert the ear tip inte the ear canal tar eneugh te be comtortably wem.

Replacement parts available, klick here

To order replacement parts or tor warranty information, contact Motorola Americas Parts Division (APD) at !-800-422-4210 or (847) 538 8023. 

* Audio output from the yellow dat, extra loud earphone exceeds Occupational Safety and Health Administration (OSHA) safety limits.