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5. CHANGING THE REMOTE
TRANSMITTER BATTERY
The RF-503 remote transmitter uses one
(1) 12 volt miniature battery, #EL12,
#VR22, or Radio Shack #23-144. It will
provide approximately one year of
operation before replacement is necessary.
To replace the battery, carefully remove the
case screw located at the end of the remote
transmitter where the key ring attaches to its
case. Use a small blade Phillips
screwdriver. Use caution so as
not to bend or otherwise damage the
battery contacts. After replacing the
battery, replace the case cover and
carefully tighten the screw. Do not over-
tighten the screw. Test the transmitter to be
sure it arms and disarms the alarm.
B. LED STATUS INDICATOR OPERATION
1. LED OFF = The RF-503 is disarmed.
2. LED CONSTANT ON = Indicates open trigger circuit. The alarm cannot be armed.
3. LED FAST FLASHING = Passive arming timer is counting down.
4. LED FLASHING = The RF-503 is armed.
5. LED FLASHING IN A 2 FLASH/HOLD SEQUENCE = Alarm breach.
NOTE: If the automatic rearm feature was chosen at the time of installation, a door must be opened
after disarming. If a door is not opened, the RF-503 will automatically rearm in 60 seconds, and the
LED will continue to flash. See section (F ) AUTOMATIC REARM for details.
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