8
allows multiple groups of users to use the same channel without hearing other groups. This product supports Continuous Tone
Coded Squelch System (CTCSS), which means there are 38 codes which have been assigned the numbers 1–38 (table I,
CTCSS). All communication on a channel can be heard if this function is switched off.
Note! When the sub channel function is switched on, all other incoming radio communication will be blocked. Press the + button
(A:10) or – button (A:11) to select the sub channel. Each change is confirmed by a voice message. You can choose between
38 tones or switch this function off. To switch this function off press the – (A:11) button when sub channel 1 is selected, or press
the + (A:10) button when channel 38 is selected. This is confirmed by the message “sub channel off”. Press the + button (A:10)
to switch this function back on.
3.9 PTT (Push-to-talk)
Press and hold the PTT button (A:14) to transmit manually using the radio. PTT transmission works at any time, regardless of
BCLO (Busy Channel Lock Out, see 3.6 VOX).
3.10 Reset to factory defaults
To restore the default settings the unit must first be switched off. Then press and hold the + (A:10) and – (A:11) buttons at the
same time while also pressing the (A:9) On/Off/Mode button. This is confirmed by the voice message “restore factory defaults”.
4. IMPORTANT USER INFORMATION
Caution!
The noise reduction may be lower when eyeglasses, goggles or respirator straps are worn between the sealing
surface of the earmuff cushions and the sides of the wearer’s head. For best noise reduction, select eyeglasses or goggles that
have thin, flat temples or straps which will minimize interference with the seal of the earmuff cushions. Pull long hair back to the
extent possible and remove other items that may degrade the earmuff seal such as pencils, hats, jewelry or earbuds. Do not
bend and reshape the headband as this will cause a loose fit and allow sound leakage.
Warning!
These hearing protectors help reduce exposure to hazardous noise and other loud sounds. Misuse or failure to wear
hearing protectors at all times when exposed to hazardous noise may result in hearing loss or injury. This product contains me
-
tallic components that may increase electrical hazards. For proper use, see supervisor, Fitting Instructions, or call 3M Technical
Service (In U.S.A. call 1-800-243-4630. In Canada, call 1-800-267-4414)
5. MAINTENANCE (figure J)
5.1. Removing/replacing ear cushions
(5.1) Slide your fingers under the edge of the ear cushion and pull straight out.
(5.2) Insert a new ear cushion by pressing until it snaps into place.
5.2 Care and Cleaning Instructions
•
Follow recommended care and cleaning instructions in order to maintain best noise reduction and function.
•
Wash outside of earmuffs only. Use mild soap and water. Do not immerse in water. Remove cushions or liners which
have become damp and allow them to dry before reinstalling.
•
Do not clean with solvents such as alcohol or acetone, or with waterless hand cleaners or products containing lanolin.
•
Do not store the earmuff in temperatures above 130 F (+55 C), for example behind a windshield or window.
•
Inspect earmuffs regularly for cracked or worn parts, especially the cushions. Replace as needed. For replacement foam
liners and ear cushions, order Hygiene Kit HY79. 3M recommends replacing foam liners and cushions at least twice a
year in order to maintain acceptable noise reduction, hygiene and comfort.
6. FCC and IC Regulations and warnings
6.1. FCC Warning
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes
or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the
equipment. Before any station transmits on any channel authorized in the GMRS from an point (a geographical location) within
or over the territorial limits of any area where radio servicesare regulated by the FCC, the responsible party must obtain a
license (a written authorization from the FCC for a GMRS system .
6.2.FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter. Do not transmit for more than 50% of the total transceiver use time; transmitting over 50% of the total
EN