
C O N N E C T O R S A N D L E D S
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GsmAlarm-420 Software ver. 1.05
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3.
LED INDICATORS
Lihgt indicators facilitate quick adjustment and troubleshooting of the system during installation.
3.1.
SIGNAL: INDICATOR OF SIGNAL STRENGTH AND GSM MODULE OPERATION
MODE
Indicator state
Explanation
Out.
GSM module is not in use. No power supply or
system failure.
Continuously On.
There is no GSM operator network registration.
Possible causes: SIM card PIN code request is not
deactivated, antenna not connected or poor network
connection quality.
Blinking more frequently than once a
second.
GSM module is in use: outgoing call or SMS is
being sent.
Blinks 5 times, short break after.
Very good signal.
Blinks 4 times, short break after.
Good signal.
Blinks 3 times, short break after.
Satisfactory connection.
Blinks 2 times, short break after.
Weak connection.
Blinks once, short break after.
Poor connection.
3.2.
Z1-Z4: INPUT STATUS INDICATOR
Indicator state
Explanation
Out.
Input is not triggered
Continuously On.
Input is triggered
3.3.
MODE: SYSTEM OPERATION MODE INDICATOR
Indicator state
Explanation
Out.
No power supply or system failure.
Continuously On.
System is operative, disarmed, no zone sensors have
been triggered.
On with short breaks.
System is operative, disarmed, but one or more zone
sensors have been triggered.
Blinking with low frequency (once in
2-3 sec.).
System is operating in armed mode.
Blinking more frequently than once a
second.
System is in alarm state, siren is active, call or SMS is
sent. If SMS is sent, indicator blinks a little bit slower
(about twice a second).
Blinking very rapidly for 2-3 sec.
SMS instruction or DTMF command receipt
confirmation.
3.4.
ALARM: ALARM MODE INDICATOR
Indicator state
Explanation
Blinks at a permanent rate.
System is in alarm state, call is made or SMS sent.
Blinks twice every 2-3 seconds.
ALRNR1 number has not been programmed. In order
GsmAlarm-420 could make calls, this number need to
be programmed!