SMS ControlMate, User Manual, Page: 16 / 56

SMS ControlMate/3G © 2016-2018 info@SL4P.net Page 16 of 56
If it was low- voltage ‘warning’ - the modem will be turned OFF to save the remaining battery charge.
It can still ‘send’ notifications. If the battery / charge recovers – the unit will revert to the fully
operational state.
However i f the battery voltage drops below the ‘crash - stop’ level, it will send a message – then shut
down the controller completely until the unit is recharged / turned off and back on.
To reduce power consumption in battery applications or remote locations, you can send the
command
SET MODEM OFF 16 , which will reduce power usage by around 50% - extending battery life
even further.
The Power/Activity indicator LED slows to blink every 4 seconds when the modem is turned off.
IMPORTANT NOTES : Further incoming SMS commands will not be received until the modem is
turned on again, but when a new outbound message is generated, the modem will turn on
automatically – and will remain on for 30 minutes (in case you need to respond remotely).
NOTE:
Using timers to turn the
modem ‘off’ in the evening, and ‘on’ in the morning, will still raise
notifications when needed, but save battery power by not ‘listening’ for your incoming messages
overnight while you’re asleep.
Another option if it suits your application - is to simply turn the modem off ‘all the time’ with SET
MODEM OFF … then as mentioned elsewhere, you’ll still get messages & notifications generated by
the unit, and you can respond or send commands back in the period after any messages – and the
modem will automatically go back to sleep 30 minutes after the last message transaction either way.
Do not turn the modem OFF in SLAVE controllers – because they can’t receive slave commands!
16
The clock and timers when the modem is ‘on’ are derived from the cellula r network. When the modem is
off, the time is maintained locally, but is not as accurate over longer periods. When the modem is turned on
again - the clock will be resynchronised to the cell network.