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Where do I get a SIM card for my GSM Alarm System? What size of SIM card do I need?


The most common options are AT&T and T-Mobile. T-Mobile has a prepaid $100, 1000 minute plan that lasts for one year (about $8.30 a month).

In Canada, the larger carriers that are compatible are Rogers and Fido.

When purchasing a SIM card, just tell the wireless carrier that you need a cellular only plan - no data needed.

If you need an IMEI number in order to activate your SIM, on the control panel, key in 55 and then press OFF/PM.

The IMEI number will be displayed briefly and you can copy it down to give to the cell carrier.

An example number is shown below, but this number will be different and unique to each GSM panel.


NOTE: The IMEI number is 15 digits long with no spaces - in the example above it would be read as "353551048113463".

Only GSM carriers can provide a compatible SIM. Verizon Wireless and Sprint cannot be used. If your personal cell phone is on Verizon Wireless or Sprint, you can remain a customer and still purchase a prepaid SIM from AT&T or T-Mobile.

There is also no issue with the system calling a Verizon or Spring phone when using a AT&T or T-Mobile SIM.

The system uses a standard size SIM card, not a micro or nano size.