Examples of wireless technology at work

Security systems

One common example of an operation or operations where the implementation of wireless technology may supplement or replace hard wired implementations is in security systems for homes or office buildings. The operations that are required (e.g., detecting whether a door or window is open or closed) may be implemented with the use of hard wired sensors or they may be implemented with the use of wireless sensors which are also equipped with some type of wireless transmitter (e.g., infrared, radio frequency, etc.) to transmit the information concerning the current state of the door or window.

Television remote control

Another example would be the use of a wireless remote control unit to replace the old hard wired remote control units that were sometimes used in the television industry. Some televisions were previously manufactured with hard wired remote controls which plugged in to a receptacle or jack in the television whereas more modern televisions use wireless (generally infrared) remote control units.

Cellular telephones

Perhaps one of the most well known examples of wireless technology in action is the cellular telephone. These instruments use radio waves to enable the operator to make phone calls from many locations world-wide. They can be used anywhere that there is a cellular telephone site to house the equipment that is required to transmit and receive the signal that is used to transfer both voice and data to and from these instruments.