Phone: (951) 824-1571
Security Alarm Contact Switches

Magnetic Switch, Contact Switches

Often the first line of defense in a security system, the magnetic door switch is a mechanism recessed in door and window frames. It’s made to trigger alarm and surveillance systems when unauthorized intrusion is detected. Our magnetic contact switches utilize the power of rare earth magnets to create an open or closed loop circuit.

The recessed magnetic switch is most common in residential purposes as it’s concealed and mounted within the materials of the structure. The recessed magnetic door switch is made with the same magnetic reed switch used for surface-mount alarm contacts. Instead of a rectangular housing, recessed alarm contacts have a cylindrical case. This makes them easy to install by simply drilling a hole. The magnets are also made using the same type of round housing.

How a Magnetic Reed Switch Works

The magnetic reed switch is typically installed on the door frame and the magnet that activates the switch is typically installed on the door. Inside the magnetic reed switch, a thin piece of steel – a steel ‘reed’, if you will – is held in position by the attraction of the magnet when the door is closed. When the door is opened, the magnet is taken away from the switch and the spring tension of the “reed” causes it to spring back against the other contact, changing the state of the switch.

Closed Loop, Open Loop Vs. SPDT

Most magnetic reed switches are closed loop, or the switch is closed in its default state. When a magnetic reed switch is designed so that the magnet is close to the switch in its default state, it is considered an open loop style. Another variation is the SPDT, or Single Pole Double Throw magnetic reed switch.

It has both open and closed loops incorporated into its design. Finally, the DPDT, or Double Pole Double Throw has two SPDT reeds in the same contact switch housing, with each having its own common open and closed side.

A popular magnetic switch set Security Savvy offers is the Reed Switch Set, Closed Loop, Steel Door Recessed 3/4" Magnetic Switch w/ Screw Terminals - 10 Pack. This closed loop magnetic reed switch set is 3/4” recessed with screw terminals. It comes hermetically sealed with plated contacts to resist sticking or freezing. It is available in 1/2” standard gap and 3/4"+ wide gap versions. Its short length and composition of PC board type terminals makes installation quick without soldering.

For residential and commercial security applications requiring a discreet surface mount alarm contact, the Reed Switch Set, Closed Loop, Flanged Miniature Surface Mount Magnetic Switch w/ Cable Leads - 10 Pack is just the solution. This miniature magnetic switch set incorporates into most décor without being noticeable.

It is available in standard gap up to 1”, and wide gap up to 1 1/4” with 22AWG cable leads. It is a closed loop circuit configuration with plated contacts to resist sticking or freezing. It has 3M adhesive tape for proper mounting on aluminum, wood, or vinyl.

Security Savvy provides end-to-end security system solutions besides magnetic switches. Our products are manufactured of quality build materials and offered at the most competitive prices. Thank you for visiting our website.

Order from Security Savvy, and upgrade your home or business security system today!

If you have any questions, feel free to give us a call. (951) 824-1571

Products 25-36 of 318
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Commercial Overhead Door Switch

Price: $14.58-$21.80
Availability: In Stock
Item #: AL-GRI-IS4110-L

    Features

    • For Use On Storage Units With Overhead Doors And Latch Type Locks
    • Optional Mounting Bracket With Mounting Hardware (Recommended)
    • 18" Stainless Steel Armored Or Standard Jacketed Cable
    • Available In Closed Loop And SPDT Open/Closed
    • Latch Type Door Protection
    • 2.25" x 1.75" x 0.55"
    • Vane Switch Shunt
    • Cost Effective
    • Easy Installation
    Concealed Contact Hinged Door Positioning Switch

    Price: $101.10
    Availability: Made to Order
    Item #: AL-GRI-2212

      Features

      • Looks like a standard screw head
      • Snaps in & locks into place in existing screw hole in hinge
      • Simple patented design
      • Paintable fake screw head blends in
      • Standard is SPDT
      • Allows for all access control hardware to be in a central location
      • Alarm contact & REX wires can all be located in a small section of the door
      • Switch is a high grade 70R Series
      • Tested by Warnock Hersey in a burn test for standard doors and frames rated up to 3 hours
      • Use only on non-ferrous pivots and hinges
      • Hinge not included
      • Made In U.S.A.
      Concrete Concealed Switch, 0.450" x 2.5" Magnet

      Price: $36.84
      Availability: In Stock
      Item #: AL-GRI-1257

        Features

        • Switch Protected From Heavy Equipment
        • 0.450" x 2.5" Magnet
        • Short "L" Bracket
        • 3’ Stainless Steel Armored Cable
        • Mounting Hardware Included
        • Made In U.S.A.
        Concrete Concealed Switch, Universal Magnet

        Price: $38.74
        Availability: In Stock
        Item #: NPNB-4510AU

          Features

          • Switch Protected From Heavy Equipment
          • Universal Magnet
          • 3’ Stainless Steel Armored Cable
          • Mounting Hardware Included
          • Made In U.S.A.
          Current Sensor

          Price: $8.34
          Availability: Made to Order
          Item #: NPNB-CS-1

            Features

            • Fails Safe With Excessive Current
            • Micro-Weld Switch Protection
            • Channels Voltage Above 60 V To Ground
            • Heat Shrink For In-Line Installations
            • Made In U.S.A.
            Door Channel Magnets

            Price: $42.00
            Availability: In Stock
            Item #: AL-GRI-4654

              Features

              • The door channel magnets are designed to be mounted in the top channel of a metal entry/exit door
              • Legs of the magnet case can be clipped to accommodate a more shallow channel
              • UL Fire Rated 10C
              • Color: White
              Dual Function Switch

              Price: $10.88
              Availability: In Stock
              Item #: NPNB-AC180

                Features

                • Recessed Steel Door
                • 4 C Jacketed Cable
                • 1 A +1 C Form Reed
                • Security to Access Control
                • Security to Relays
                • Access to VCR for CCTV Timers
                • Security to Recorders
                • Security to Pool Alarm
                • UL 10 C Fire Rated
                • Made In U.S.A.
                Dual Function Switch

                Price: $14.16-$23.08
                Availability: Made to Order
                Item #: NPNB-AC410P

                  Features

                  • Industrial Surface Mount
                  • 6 C Jacketed Cable Or Armored Cable
                  • 1 A + 1C Form Reed
                  • Security to Access Control
                  • Security to Relays
                  • Access to VCR for CCTV Timers
                  • Security to Recorders
                  • Security to Pool Alarm
                  • Made In U.S.A.
                  Dual Function Switch

                  Price: $20.82
                  Availability: In Stock
                  Item #: NPNB-AC29P-A

                    Features

                    • Surface Mount
                    • 36" Armored Cable
                    • 1 A +1 C Form Reed
                    • Security to Access Control
                    • Security to Relays
                    • Access to VCR for CCTV Timers
                    • Security to Recorders
                    • Security to Pool Alarm
                    • Made In U.S.A.
                    Dual Function Switch

                    Price: $12.30
                    Availability: In Stock
                    Item #: NPNB-AC29P

                      Features

                      • Surface Mount
                      • 4 C Jacketed Cable
                      • 1 A +1 C Form Reed
                      • Security to Access Control
                      • Security to Relays
                      • Access to VCR for CCTV Timers
                      • Security to Recorders
                      • Security to Pool Alarm
                      • Made In U.S.A.
                      Dual Function Switch

                      Price: $42.48-$52.72
                      Availability: In Stock
                      Item #: NPNB-AC4400

                        Features

                        • Weather Resistant
                        • Surface Mount
                        • Industrial Aluminum
                        • Jacketed Cable Or Armored Cable
                        • 1 A + 1C Form Reed
                        • Security to Access Control
                        • Security to Relays
                        • Access to VCR for CCTV Timers
                        • Security to Recorders
                        • Security to Pool Alarm
                        • Made In U.S.A.
                        Dual Function Switch

                        Price: $6.62-$8.50
                        Availability: In Stock
                        Item #: NPNB-AA180

                          Features

                          • Recessed Steel Door
                          • 12" 4 C Jacketed Cable
                          • 2 A Form Reeds
                          • Standard Or Wide Gap
                          • Security to Access Control
                          • Security to Relays
                          • Access to VCR for CCTV Timers
                          • Security to Recorders
                          • Security to Pool Alarm
                          • UL 10 C Fire Rated
                          • Made In U.S.A.