Lectrosonics UM190b - Manual (Page 6)

BATTERY INSTALLATION
The transmitter is powered by a 9 Volt alkaline or lithium battery. It is important that you use ONLY an ALKALINE or
LITHIUM battery for longest life. Standard zinc-carbon batteries marked “heavy-duty” or “long-lasting” are not
adequate. Ni-cad rechargeable batteries will only provide 2 hours of operation, or less, and will run down quite
abruptly. The battery status circuitry is designed for the voltage drop over the life of alkaline batteries.
To open the battery compartment, press outward on the cover door in the direction of the arrow as shown in the
drawing. Only firm, sliding pressure is needed to open and close the battery door. Swing the door open and take note
of the polarity marked inside showing the location of the positive (+) and negative (-) terminals. You can see the large
and small contact holes inside the battery compartment with the door open.
Swing the
door open
Press outward on the
battery door in this
direction
Insert the battery correctly and close the cover by pressing the door closed and across, reversing the opening proce­
dure illustrated above. If the battery is inserted incorrectly, the door will not close. Do not force the door closed.
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