Radio Shack 49-421A User Manual
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Cat. No. 49-421A
OWNER’S MANUAL
Please read before using this equipment.
Door Alarm
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FEATURES
The RadioShack Door Alarm is your 24hour “electronic sentry.” You can choose
between an instant alarm (for when you
are home) or a delayed alarm (giving you
time to disarm the alarm after you return
home). Disarming is easy using one of the
two keys that come with your alarm. Your
alarm’s other features include:
Magnetic Sensor Alarm System
—
sounds a loud (105 dB at 1 foot), piercing
alarm when the magnet moves away from
its al a r m un it.
Simple Installation
— mounts easily with
either screws or adhesive tape (both supplied) on non-met allic doors and windows.
© 1998 Tandy Corporation.
All Rights Reserved.
RadioShack is a registered trademark
used by Tandy Corporation.
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Low Power Consumption — uses less
than 0.05 mA in standby mode (when the
alarm is not sounding) for long battery life.
Solid-State Circuitry — provides dependable operati on.
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PREPARATION
INSTALLING A BATTERY
Your alarm requires one 9-volt battery (not
supplied) for power. For the best performance and longest life, we recommend an
alkaline battery, such as RadioShack Cat.
No. 23-553.
Cautions:
required size and type.
Follow these steps to install the batter y.
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Use only a fresh battery of the
illustration
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1. Use a Phillips screwdriver to remove
the screw from the battery compartment cover, then slide the cover off.
2. Snap the connector over the 9-volt
battery’s terminals and place the battery in the compartment.
3. Replace the cover, then reinsert and
tighten the scr ew.
When your alarm operates erratically or
the volume decreases, replace the batt ery.
Cautions:
• Dispose of the old battery promptly
and properly. Do not burn or bury i t.
• Always remove an old or weak battery. Batteries can leak chemicals that
can destroy electronic parts.
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