SORDIN FM Basic, FM Pro & Dual Pro
PRODUCT CHARACTERISTICS
Sordin FM Basic, FM Pro & Dual Pro are part of a series of products developed to improve your work and leisure time when
you are in noisy environments. They are available in the following versions:
FM Basic
FM Basic
Headband
Helmet mounted
FM Pro
FM Pro
Headband
Helmet mounted
Dual Pro
Dual Pro
Headband
Helmet mounted
To ensure you are really satisfied with the product it is important that you read the user’s instructions thoroughly.
Important information about radio reception, reproduction of ambient sound and return guarantee.
The quality of FM radio reception varies considerably due to many circumstances, e.g. distance from the transmitter antenna,
topography, natural surroundings, buildings, screening materials and other electrical interference. If this product does not meet
your expectations, return it immediately to the place where you bought it, and your money will be refunded. NOTE! This offer
does not apply if the product has been regularly used.
USER’S INSTRUCTIONS, ELECTRONICS
ACTIVATING THE HEARING PROTECTOR / CHANGING THE BATTERIES (figure C)
The product must be fitted with 2 standard alkaline batteries 1.5 V AA. The use of rechargeable batteries such as NiMH 1.2 V
or NiCd 1.2 V will reduce the operating time. The battery holder is fully integrated in the ear muff and does not have any but-
tons. To change the batteries, follow the instructions below (figure C). Start by pulling the ear muff down as far as it will go (fig-
ure C1). Remove the cushion by pulling it straight out (figure C2).
Remove the battery cover. Insert the batteries in the battery holder. Make sure that the + and – terminals on the batteries are
the right way round (figures C3–C5). Refit the battery cover (C6).
Refit the inserts (2) and press on the cushion (figure C7). After replacing the batteries it is important to check carefully that the
inserts and the cushion are correctly fitted so that noise reduction is not impaired. Turn the cushion so that the bulge is at the
bottom.
FUNCTION BUTTONS (figure D)
On/off (O)
Switch on the electronics by pressing the button ( ). To switch off, press the same button (O) and hold for 2 seconds.
Volume adjustment, (O)
Adjust the volume by pressing briefly on (O). The initial volume is the same as when the radio was last switched off. The vol-
ume has three settings (Basic Line), or four settings (Pro Line). When the highest volume setting has been reached, pressing the
button again will start the volume from the lowest setting. Sound via the speakers is limited to a maximum 82 dB (A) equiva-
lent sound level.
Setting the radio station, (+) (-)
The FM-radio frequency band is 88 - 108 MHz. Station tuning is automatic. A push of the desired directional key down (-) or
up (+) will tune the radio to the next station and stop. A tone will be heard as acknowledgement of each push of a key. The
FM-radio starts at the latest used station. This memory is erased when the batteries are replaced.
Battery save function
To maximise battery life the product is equipped with a battery save function. This function automatically switches off the elec-
tronics after 4 hours if none of the buttons is pressed during this period. To switch back on, press the button in the middle of
the keypad (O). About 2 minutes before automatic switch-off occurs, a series of beeps will be heard as a warning that the hear-
ing protector is about to be switched off. Press any button to delay switch-off by a further 4 hours.
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