GSM Alarm+
FAQ
Q. What is the physical size of the unit?
A. 
Q. How many different alarm signals can I connect to each
unit?
A. Each GSM Alarm has 8 volt-free inputs, which
allow you to connect various outputs from your machine, process
or anything that has a switch contact. This could be as simple
as a limit switch or a door to alert you of tamper or the contacts
of a thermostat to inform you of an over/under temperature alarm.
With 8 inputs you can use the GSM Alarm as the central point for
a number of machines or processes.
Q. Do I need a telephone line?
A. No, like the majority of SeNd Technology’s
products, the GSM Alarm is based on GSM (mobile phone) technology
so it is wireless and can be used wherever there is GSM coverage.
This makes it ideal for applications where it is costly to run,
and lease, a standard wired phone line. It also makes a great
backup in case the main line fails.
Q. Can I use a standard mobile phone SIM
card?
A. Yes. The unit has a small SIM holder under
the bottom cover. This contains a standard mini SIM card that
can be from any of the main network providers.
Q. What power source do I need?
A. The GSM Alarm is supplied by 12vDC.
Q. Will it run from a battery supply?
A. Yes as long as it is above 9V – but remember
the power will be slightly higher during transmission. A small
ni-cad battery will do the job and can be used as a back-up device
to send an alarm on main power failure. We have a version with
an internal battery for monitor power failure.
Q. What is the difference between the
GSM Alarm A and GSM Alarm X?
A. GSM Alarm A has a built in antenna. GSM Alarm
X requires an external antenna - Ideal for use in weak areas.
We can supply high gain versions.
Q. What type of Alarm messages does it
send?
A. GSM Alarm can send the following alerts:
Q. Can I send a message on the input opening
and closing?
A. Yes – the messages can be different for
either state. Eg. High Water Level (Close) – Water OK (open).
Q. Can these messages be sent to more
than one person?
A. Yes each input can send alerts to numerous
recipients. These can be different for each person and can be
any combination of the above.
Q. What format is the alarm message sent?
A. See previous answers.
Q. How much does it cost to run?
A. If you use a low cost SIM card you only pay
when you send a SMS message. With some network providers this
can cost as a few pence. If you use the “ring” only
command its free.
Q. Which network should I use?
A. Any that use standard 3v GSM SIM card (Vodafone,
Orange, T-Mobile, O2 etc) but not 3G SIMs
Q. Can I set up my own messages?
A. Yes – All messages are stored on the
GSM device using GSM Suite software.
Q. What happens if the power fails?
A. We have a battery backed version of most of
our products. These contain an internal 9v battery that is recharged
by the unit itself. If the main power fails the GSM device will
send a message alerting you of this. It will also send a message
when the power is resumed.
Q. What is the service centre number for
my SIM?
O2
(Was BT Cellnet / Genie mobile)
+447802000332
Alt: +447802000334
Alt: +447802092035
T-Mobile (was One2One)
+447958879879
Orange
+447973100973
Alt: +447973100974
Vodafone
+447785016005
Virgin
+447958879890
Q. What countries use GSM?
A. This following link
provides detailed information about network operators worldwide
that offer services from the GSM family of Wireless Communications.
Specific details included within this section are network, roaming,
services and coverage information for over 400 operators in 182
countries/areas of the world.
