What are GSM Controllers?
A device you can use remotely via a mobile telephone or landline, to control almost any electrical device, including gates, garage doors, barriers, lighting, heating and much more. There are no call costs incurred as the call is rejected without answering.
Are they easy to use?
Yes! You call or text the telephone number which is on the SIM card contained within the GSM controller, the call is rejected and instructs the relay to switch the device it is connected to for a pre-set amount of time. If desired only approved users can activate it.
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