You Want to Use a Reader That Does Not Require

question 22

Multiple Choice

You want to use a reader that does not require a card or key to be inserted or swiped. Which of the following should you use?

• A)Barcode
• B)Magnetic stripe
• C)Electronic key
• D)Proximity card

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Definitions:

Resistance Temperature Detectors

Sensors that measure temperature by correlating the resistance of the RTD element with temperature.

Thermocouples

Sensing devices used to measure temperature, consisting of two dissimilar metal wires joined at one end, producing a voltage proportional to temperature difference.

Reed Relay

A type of relay that uses a pair of magnetic reeds as the switching mechanism, often enclosed in a glass tube to protect against external magnetic fields and contaminants.

Permanent Magnet

A material that maintains a constant magnetic field without the need for electrical power.