User's Manual

HM
LECTROSONICS, INC.
8
The LCD will display the locked condition as long as the
arrow buttons are held, then revert back to the previous
screen when either button is released.
With the controls locked, the AUDIO and FREQ buttons
can still be used to display current settings. Any attempt
to change a setting by pressing either the Up or Down
arrow button will result in an on-screen “Loc” reminder
that the controls are locked. Remove the batteries to
unlock the control panel.
Important: Once the transmitter is locked,
it cannot be unlocked or powered off using
the buttons. The only way to unlock a locked
transmitter is to remove the batteries.
The HM transmitter is powered by two AA batteries.
We recommend using lithium batteries for longest life.
Lithium batteries provide over X hours of operation at
room temperature.
Note: Standard zinc-carbon batteries marked
“heavy-duty” or “long-lasting” are not adequate.
The battery status circuitry is designed for the voltage
drop over the life of lithium batteries.
To install new batteries:
1. Slide open the Battery Cover and remove any old
batteries.
2. Insert the new batteries into the housing. One bat-
tery goes in positive (+) end first, the other negative
(-) end first. Look into the battery compartment to
determine which end goes in which side. The side
with the plastic ring is the side which accepts the
positive end of the battery.
Note: It is possible to install the batteries backward
and close the battery door, but the batteries will
not make contact and the unit will not work.
3. Slide the Battery Cover until it snaps securely shut.
Battery Installation
Battery
Compartment
Battery
Cover