Communication equipments

Communicators are the devices used for the transmission of the signal from the controller to the operator or sounder. The communiqué may be in the form of a telephone message sent to a specific telephone number (via Voice or Speech Dialler), a controlled SMS message or in the form of a TCP/IP transmission. Of importance is the type of media the communicator works on. If a signal or transmission is to be made the user may already have the media available or will need to specially install it first. Nowadays however the signal is digitised into many fashions and can be sent via wireless (infrared) transmission or via TCP/IP computer networks.