Consider the following communication technologies:Closed-circuit TelevisionRadio Frequency Identific

Question

Consider the following communication technologies:Closed-circuit TelevisionRadio Frequency IdentificationWireless Local Area NetworkWhich of the above are considered Short-Range devices/technologies?

Accepted Answer

Short Range Devices (SRD) are radio devices that offer a low risk of interference with other radio services, usually because their transmitted power, and hence their range, is low. The definition Short Range Device may be applied to many different types of wireless equipment, including various forms of:Access control (including door and gate openers)Alarms and movement detectorsClosed-circuit television (CCTV)Cordless audio devices, including wireless microphonesIndustrial controlLocal Area NetworksMedical implantsMetering devicesRemote controlRadio frequency identification (RFID)Hence option (d) is the correct answer.