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L1-02E.15 – Outdated Sensors

L1-02E.15 – Outdated Sensors Lesson 2E – Other Sensors Texas Level 1 Passive Ultrasonic or Infrasonic A motion detection device that “listens” for ultrasonic sound energy in an area, and reacts to high frequencies associated with intrusion attempts....

L1-02E.14 – Outdated Sensors

L1-02E.14 – Outdated Sensors Lesson 2E – Other Sensors Texas Level 1 Microwave Sensors Motion detection devices that flood a designated exterior or interior area with an electronic field. A movement in the area disturbs the field and sets off an alarm. Signals...

L1-02E.13 – Outdated Sensors

L1-02E.13 – Outdated Sensors Lesson 2E – Other Sensors Texas Level 1 Active Ultrasonic A motion detecting device that emits ultrasonic sound energy into a monitored area and reacts to a change in the reflected energy pattern Ultrasonic sound is transmitted from...

L1-02E.12 – Outdated Sensors

L1-02E.12 – Outdated Sensors Lesson 2E – Other Sensors Texas Level 1 Cord Trap An outdated means of detection consisting of a cord or wire stretched across a doorway and connected to the protective circuit Breaking or pulling the cord loose breaks the circuit...

L1-02E.11 – Outdated Sensors

L1-02E.11 – Outdated Sensors Lesson 2E – Other Sensors Texas Level 1 Lacing Fine wire stretched back and forth across skylights, ducts, or other openings. An intruder breaking a wire will trip the alarm. Most modem alarm systems use motion detectors...