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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 magnet is brought close enough to it Moving the magnet...

L1-01A.01 – Burglar Alarm Sensors

Sensors allow the system to monitor what is happening at the alarm site, Examples include: Motion sensors Glass break sensors Door and window...