The Universal GSM can be configured to send warning messages if the backup battery is running low.
There are two battery warning messages:
1.
A low battery message is sent when the battery has >= 60 minutes capacity.
2.
A shutdown warning message is sent when there is between 5 and 30 minutes of battery life left.
The ‘Battery Low’ and ‘Shutdown in Progress’ messages are setup by default but can be changed using the following
message:
*2 # First msg text , 60 # Second msg text , 5 # N retry , Time retry
Command
Description
*
2
Configuration message start
#
Separator
First msg text
Battery Low message text sent when the battery has >= 60 minutes capacity - max 30 characters -
Default = Battery Low
,
Separator
60
Fixed value
#
Separator
Second msg text
Shutdown in Progress message sent when there is between 5 and 30 minutes of battery life left -
max 30 characters - Default = Shutdown in progress
,
Separator
5
Fixed value
#
Separator
N retry
Number of attempts to send SMS - can be set between 0 and 9 - Default = 2
,
Separator
Time retry
Waiting time before a repeat sending of the SMS - can be set between 0 and 9 Default = 1
Example:
*2#Battery Low,60#Shutdown in progress,5#2,1
As in the configuration message ‘ACK’ and ‘NACK’ messages will be received.
4#*2#3GLIFT#ACK
5#*2#3GLIFT#NACK
The low battery setup can then be checked by sending the following message:
*2?
Then this SMS will be received:
6*2#Battery Low,60#Shutdown in progress,5#2,1
To check configuration, send the following message to the Universal GSM:
*1?
Provided the sender is an authorised number then the following example will be received:
3#*1#447987447123447987447123456789
Configuration check
Low battery warning setup