This allows him to send text messages to himself when the alarm system is armed, disarmed, or triggered. All the code is available on GitHub in case you also have a DSC 1550 alarm system.

DSC TL255 internet alarm communicator features panel remote uploading & downloading via internet/intranet, supervision heartbeat via internet/intranet,128 Bit AES encryption, full event format and SIA ...

DSC GS3055-IGW GSM universal wireless alarm communicator works by connecting the control panel to the GSM network to provide protection against accidental line cuts caused by storms, construction or ...