Listen LR-400-072 Reference guide

LR-400-072/216 Quick Reference Card
SQ™ (Super Quiet)
– SQ™ minimizes RF noise allowing clear reception.
– To work properly SQ™ must be enabled for both the transmitter and the receivers.
Channel Lock/Unlock
– To lock/unlock on a channel, hold the SEEK button for 4 seconds.
– The LED will blink momentarily when the channel lock is activated/deactivated.
– If the receiver is locked on a channel and the SEEK button is pushed, the LED will blink.
Squelch
– Squelch will mute the audio output of your receiver when the signal from the transmitter is turned off or is
too weak to be received. To adjust squelch, follow these steps:
1. Turn unit off.
2. Press and hold the SEEK button; while holding SEEK, turn the unit on. Release the SEEK button.
3. Use the Channel UP/DOWN buttons to adjust the squelch sensitivity settings.
4. Squelch setting 00 is no squelch; this effectively disables the squelching capabilities of the
receiver. Squelch setting 20 is maximum squelch sensitivity; you must have a very strong and
stable RF signal for the unit to not engage the squelch feature.
5. Press SEEK to exit the squelch programming mode.
IMPORTANT: DO NOT ATTEMPT TO CHARGE ANY TYPE OF BATTERY OTHER THAN NiMH (NICKEL METAL HYDRIDE) with your
Listen equipment. In order to charge NiMH batteries, the BATTERY SELECT switch in your Listen product
must be set to the NiMH setting.
WARNING: When using a Listen charging case, the case lid MUST be open or removed while the units are charging.
© 2008 Listen Technologies Corporation®All Rights Reserved 200859
For further details regarding advanced options for your Listen products please visit our website at
www.listentech.com Resources/Support/Manuals
or contact Listen at +1.801.233.8992 • +1.800.330.0891 North America

LR-400-072/216 Quick Reference Card
SEEK Button: Allows the user
to search for or lock onto an
active channel.
3.5 mm Output Jack: Connect a Listen earphone(s) here.
Look&Listen™ Display:
Shows receive level, channel,
battery status, and lock status.
Battery Compartment:
Place two (2) AA batteries
in compartment. Be sure to
follow polarity pattern.
On/Off and Volume Control Dial
Battery Select Switch: Choose
the type of batteries being
used - Alkaline or NiMH.
Power/Charging Port
Front Door Lock
LED: When lit, indicates unit has power. When
batteries are low or charging the LED flashes.
RF Receive
Indicator:
Indicates the RF
receive level.
Channel Display: Displays the
channel the LR-400 is currently on.
Lock Icon: Indicates the unit is
locked on current channel.
Battery Level
Indicator
Channel Select Buttons
SQ™ Switch: Turns SQ™ On/Off.
© 2008 Listen Technologies Corporation®All Rights Reserved 200859