13
Relay output
Response Message
The relay can be operated from a console or via
SMS (see chapter 'SMS commands').
When sending a power on or power off command, the
SMSB121TH responds with a standard notification SMS
('ON' for 'COM-NO' status, 'OFF' for 'COM-NC')
Telephone call
The device is able to store a list of telephone
numbers with the relative names (max 1000) enabled
to activate and/or deactivate the selected relay
output with a simple telephone ring at no cost. The
device recognizes the incoming call and immediately
abates it, while activating the system to which it
is connected. This function can be configured in
the following ways:
Exchange: the simple relay exchange (ON/OFF) is
carried out
Pulse: A programmable pulse of 1-65535 seconds is
performed
The user also has the option of activating the SMS
reply option, which allows an SMS confirming the
command.
Power supply failure
This feature allows selected users to receive a
notification message when power failure and/or
power reset occurs. The device is equipped with a
lithium battery to perform this function.
N.B. If the power supply should be interrupted for
a long time and the battery is completely dis-
charged; before accessing the device, it is neces-
sary to wait at least 30 minutes before being able
to send the SMS.