What is a GSM alarm dialler?

Posted by CONTROL FREQ at

A GSM alarm dialler is a SIM card based device mobile phone network by utilising the SIM card for connection It doesn't have to be used with an intruder alarm system. It also works with fire alarms or any kind of alarm sensor. For example, you could have a photocell across your driveway. When someone passes through that invisible photocell beam, the GSM dialler will sense it and send you a text message. This is just one example. It cold also be used to let you know if a PIR sensor has been activated. The typical use for a GSM...

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