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L R - 4 2 0 0 - I R I D S P R E C E I V E R M A N U A L
Quick Setup and Operation Instructions:
1. Unpack Unit
Inspect the unit for physical damage. If damage is apparent, please contact Listen Technologies
technical support for assistance.
2. Activate Battery
Remove the clear plastic pull tab located at the
bottom of the battery door, this will activate the
internal battery connections. Note: upon first
activation the battery will have a limited charge,
we recommend the unit be charged immediately.
3. Charge Battery
Fully charge the rechargeable Lithium Ion battery by connecting the unit to one of Listen Technologies
charging options.
a. LA-380 Intelligent 12-Unit Charging/Carrying Case
b. LA-381 Intelligent 12-Unit Charging Tray
c. LA-421 1-Port USB Charger (comes with cable)
d. LA-423 4-Port USB Charger (comes with 4 cables)
e. LA-422 USB to Micro USB cable (Connects iDSP™ receiver to any standard USB port)
When connected to a charging option the OLED status display will show the battery charge Icon
momentarily and the status LED next to the power button will begin to flash indicating that the unit
is charging.
When the unit reaches 100% charged the status LED next to the power button will stop flashing and
will be solid.
Pull the tab to activate
the internal battery
OLED Display:
Charging Icon when
first connected to a
charging source
Indicated Unit #,
Charge % and Channel
Assignment when
removed for charging
Status LED:
Flashes during charging
Solid when charge is
complete
