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6. TECHNICAL MESSAGES AND STATUS FEEDBACK
Technical messages
In case of a technical problem, the administrator receives an SMS message. Possible technical
messages are:
Message
Reason
Low batteries, external power supply
OK
Power is available, batteries need to be replaced
No external power supply, batteries OK No external power supply, batteries are capable to
take over operation in low power mode
Low batteries, no external power
supply
No external power supply, batteries need to be
replaced
External power supply OK, batteries
OK
The external power is restored (or the adapter is
plugged in a socket), batteries do not need to be
replaced
Message(s) missed due to
Network/SIM failure
One or more SMS text messages couldn’t be sent,
due to a SIM card failure or GSM network failure.
When receiving one of the above mentioned technical messages, please take appropriate action
as soon as possible. During the battery replacement, the SIM card does not have to be removed.
Status feedback
Status
LED pattern
Required action
Module not configured
Blinking 1 second on / 1
second off
Configure at least one telephone
number
Module is switched on,
powered by batteries
1 flash every 3 seconds
No action required
Module is switched on,
powered by an external source
On
No action required
Module establishes network
connection to send an alarm
message
Blinking 2 seconds on, 1
second off
Wait until the network connection
is established and the message
is sent
Module establishes network
connection to get to program
mode
Blinking 3 seconds on, 1
second off
Wait until the network connection
is established before
programming
No GSM connection
2 flashes every 3 seconds Try the SIM card in any mobile
telephone; replace SIM card
using other telecom provider; try
the module at another location
No valid SIM card or wrong PIN 3 flashes every 3 seconds Try the SIM card in any mobile
telephone; remove PIN code;
check credit; replace SIM card
Successful programming action Blinking 3 times
No action required
Faulty programming action
Flashing 5 times
Check SMS command
Low batteries
4 flashes every 3 seconds Replace both batteries
