User Manual

Proper Fit

When worn properly, this headset will provide significant hearing protection. If it is not worn

properly, the headset’s effectiveness in reducing harmful noise is severely compromised.

• The length or vertical fit of the headset ear dome is adjusted by the headband or head -

strap. Adjust as necessary to achieve a fit that ensures the headset ear dome completely

covers the ear.

• This headset is intended to be a left dress headset.

Rotating the mic boom in order to switch dress direction may damage the

boom or wiring.

Damage to the headband cable may result from rotating the metal head

band on the UH model in the wrong direction.

• For maximum comfort, wear the headset as far back on the head as possible, while ensur-

ing the ear dome still completely covers the ear. If discomfort is felt in the jawbone, you are

wearing the headset too far forward.

Caution

This Firecom headset provides 24dB noise attenuation when properly fitted to the user and

worn as instructed. Any modification to the hearing protector such as drilling holes in the

dome, painting or reforming the headband spring, will negatively impact the hearing protector’s

performance and hearing damage could occur.

Federal law requires the following statements:

“Although hearing protectors can be recommended for protection against the harmful effects

of impulsive noise, the Noise Reduction Rating (NRR) is based on the attenuation of continu-

ous noise and may not be an accurate indicator of the protection attainable against impulsive

noise such as gunfire.”

“The level of noise entering a person’s ear, when a hearing protector is worn as directed, is

closely approximated by the difference between the A - weighted environmental noise level

and the NRR.

Example

1. The environmental noise level as measured at the ear is 92dBA.

2. The NRR is 24dB.

3. The level of noise entering the ear is approximately equal to 92dB (A) – NRR.

Caution

For noise environments dominated by frequencies below 500 Hz the

C - weighted environmental noise level should be used.”

Always wear a hearing protector in areas that have been identified as high noise locations.