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56es8lTI
September 10th, 2013, 10:25 PM
So, I'm setting up an alarm system in my home and its dial-out function will probably be using a phone SIM card. I'm trying to make this as inexpensive as I can.

The two choices I've had suggested are:

1: Having it as a "second phone" on my regular mobile account. I don't have a mobile, so that's out.

2: Having it use a prepaid SIM card with rollover, which is apparently pretty rare.

Any bright suggestions will be appreciated! ;)

markbl
September 11th, 2013, 07:02 AM
For my custom home alarm system I just send an email to a email/SMS gateway service. There are heaps of them and they are cheap and reliable.

tgalati4
September 11th, 2013, 08:44 PM
What is the model of the alarm system? I have an old system with an analog phone dialer. I just reprogrammed it with different beep tones depending on the fault/alarm condition. I am assuming that you want to remove your analog land line and replace it with a second cell phone? If you have any pc's in the house running 24/7 as a server, you could install a modem card to receive the call and then run a script when a call comes in to send an email/SMS/text message to your cell phone.

An alternative it to rewire the alarm's dry contacts into an Arduino or Raspberry Pi and use that to send the text message.

Kevin_Arnold
September 11th, 2013, 08:51 PM
Depending on what exactly you are wanting to do, Ting.com can get you some dirt cheap cell service for small stuff like this.

sandyd
September 12th, 2013, 12:57 AM
So, I'm setting up an alarm system in my home and its dial-out function will probably be using a phone SIM card. I'm trying to make this as inexpensive as I can.

The two choices I've had suggested are:

1: Having it as a "second phone" on my regular mobile account. I don't have a mobile, so that's out.

2: Having it use a prepaid SIM card with rollover, which is apparently pretty rare.

Any bright suggestions will be appreciated! ;)

some phone providers actually have a address where you can send email to. Email that is sent there arrives on your phone as a txt message

markbl
September 12th, 2013, 12:59 AM
An alternative it to rewire the alarm's dry contacts into an Arduino or Raspberry Pi and use that to send the text message.
Well I just assumed the OP had replaced his alarm box with something that ran Ubuntu (e.g. Beaglebone Black), else why is he asking/posting here in these forums?

My alarm system is running on a Raspberry Pi (although that runs Raspian, i.e. essentially Debian) with a PiFace board which I have wired all the PIR and detector inputs into.

Paco_Wilson
September 16th, 2013, 09:32 AM
1. If it's just dial out, you may connect it to traditional fixed phone line. You still can use the phone, when the alarm system is working.
Majority of GSM alarm system are supporting both SIM card and fixed phone line.

http://www.hkvstar.com/pdf/g60.pdf

2. Buy a prepaid SIM card and insert it into GSM alarm system, making sure the SIM is activated and regularly to check the fee for keeping it active.


So, I'm setting up an alarm system in my home and its dial-out function will probably be using a phone SIM card. I'm trying to make this as inexpensive as I can.

The two choices I've had suggested are:

1: Having it as a "second phone" on my regular mobile account. I don't have a mobile, so that's out.

2: Having it use a prepaid SIM card with rollover, which is apparently pretty rare.

Any bright suggestions will be appreciated! ;)