Radio Fault Led Patterns; Low Battery Detection - ADEMCO 7720PLUS Installation Instructions Manual

Radio Fault LED Flash Patterns
Low Battery Detection & Restoral

Low Battery Detection

The radio tests the condition of the batteryperiodically. If the radio finds that the battery is low, a low
battery warning message will be transmitted. When the battery voltage restores, the radio will
transmit a battery restore message.
Battery Charging Mode
The battery is under continuous float charge whenever the AC power is connected and sufficient.
# Flash
S-L-L-L
1
S-L-L-S
5
CRC S-S-L-S
S=Short flash (150mS); L=Long flash (600mS)
#=Fault code number. See "S" command in the TESTING THE
7720PLUS section for additional status information.
Reason
Internal radio fault
Low power or high VSWR.
RAM/EEPROM corruptions
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