Phone line controller
Phone line controller is a device that connects to the phone line and has a relay as an output switch. It should also sense if the connected ยซconsumerยป is turned-on or off and report to the administrator at the other end of the phone line. The administrator would then call-in the device, log in with the password, and check the state of ยซconsumerยป, turn it on or off, change password or some other settings.
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