L1-01B.03 – Normally Closed Contacts A normally closed standard contact has a single switch and a single magnet When the switch is near the magnet it stays open When the magnet moves away it closes Used in an open circuit...
L1-01B.02 – Normally Open Contacts A normally open standard contact has a single switch and a single magnet When the switch is near the magnet it stays closed When the magnet moves away it opens Used in a closed circuit...
L1-01B.01 – How a Magnetic Contact Switch Works A two-unit device, consisting of a small permanent magnet (with no electrical connections) and a magnetically sensitive reed switch, which is physically wired into the circuit The switch is activated whenever the...
L1-01A.01 – Burglar Alarm Sensors Sensors allow the system to monitor what is happening at the alarm site, Examples include: Motion sensors Door and window contacts Glass break...
L1-01B.04 – Magnetic Contact Switch Original magnetic contact switches were open to the air and allowed dust to accumulate inside the switch Dust may prevent proper...
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