edwards signaling Articles

edwards signaling Articles

Protecting Paintings and Other Hanging Art Objects

Edwards Signaling 10/2/2018
Protecting Paintings and Other Hanging Art ObjectsPaintings and other hanging works of art can be protected with surface or recessed-mount wide gap switches.
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Control Switching Using DPDT Switches

Edwards Signaling 9/28/2018
Control Switching Using DPDT SwitchesThis information describes how to achieve dual switching with one magnetic contact and one magnet. DPDT magnetic contacts such as the Sentrol 1087D, 1084D, 2507AD, or 2707AD (see catalog) may be used in place of two contacts or one contact and a floor mat for an annunciator panel.
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Increasing Gap Distance of Recessed Switch with Second Magnet

Edwards Signaling 9/28/2018
Increasing Gap Distance of Recessed Switch With Second MagnetYou can increase the gap distance of a recessed switch in a door about 40% by placing two magnets side-by-side. This is helpful if you need to increase the gap distance but do not have a wide gap switch.
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Mounting Data for Steel Doors and Windows

Edwards Signaling 9/28/2018
Mounting Data for Steel Doors and WindowsEach sample was selected at random from finished goods inventory. Tests on each contact were run to measure pull in (make), and drop out (break) distances prior to mounting on the 6" wide, 16" long, and 1/2" thick steel plate.
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Mounting Positions for Recessed Switches

Edwards Signaling 9/28/2018
Mounting Positions for Recessed SwitchesSentrol recessed contacts can be installed in a variety of positions to accommodate any application. As shown in Figure 1, the switch and magnet can be mounted end-to-end within an imaginary arc around the switch, or parallel to the switch.
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Protecting A Freezer Door

Edwards Signaling 9/28/2018
Protecting A Freezer DoorSecuring a freezer door against unauthorized entry. The Sentrol normally closed 2505A-L5 industrial magnetic contact can withstand condensation or temperatures in freezers down to -40˚F.
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Protecting Art Objects

Edwards Signaling 9/28/2018
Protecting Art ObjectsArt objects such as statuary, vases, chests, or other works of art not in cabinets or other coverings, can be protected with the Sentrol roller magnetic switch.
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Protecting Boats At Moorages

Edwards Signaling 9/28/2018
Protecting Boats At MooragesUse a Sentrol 2105A standard-type Magnapull to extend coverage of a normal marine alarm to the dock or moorage where the boat is secured.
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Protecting Boats - Deck and Cabin Protection

Edwards Signaling 9/28/2018
Protecting Boats Deck and Cabin ProtectionThe interior of a boat can be protected with a magnetic contact in a simple alarm system. Protecting the hatches and companionway can be easily accomplished using recessed or small surface mount switches.
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Protecting Casement Windows

Edwards Signaling 9/28/2018
Protecting Casement WindowsUsing surface mount contacts, the switch and magnet are both concealed when the window is closed. Use off-white, white or mahogany brown units to match plastic cover on the window.
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Protecting Chain-Link Rolling Gates

Edwards Signaling 9/28/2018
Protecting Chain-Link Rolling GatesFor most chain-link rolling gates, there is considerable tolerance and leeway in the "closed" position. This makes it difficult to assure proper alignment of the gate switch for alarm protection.
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Protecting Deeply Recessed Doors

Edwards Signaling 9/28/2018
Protecting Deeply Recessed DoorsFive methods are presented here for protecting deeply recessed doors with surface mount contacts. Note that when mounting on steel, a spacer should be used behind the switch, and/or a wide gap switch should be used.
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Protecting Doors and Windows with Uneven Wiring Holes

Edwards Signaling 9/28/2018
Protecting Doors and Windows with Uneven Wiring HolesIt may happen, during installation, that holes are over-drilled, under-drilled, or have an uneven diameter. Oversized holes can occur due to difficulties in drilling, especially in tight quarters or enclosed spaces.
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Protecting Double Hung Windows

Edwards Signaling 9/28/2018
Protecting Double Hung WindowsProtecting double hung windows with recessed or surface-mounted magnetic contacts with regular or wide gap switches.
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Protecting Guns and Gun Cabinets

Edwards Signaling 9/28/2018
Protecting Guns and Gun CabinetsGun cabinets can be protected like china cabinets on the previous two pages. However, since the glass front to a gun cabinet could be broken, and guns stolen without sounding the alarm, two other methods for protecting guns are provided here.
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Protecting Movable Objects Protecting A China Cabinet

Edwards Signaling 9/28/2018
Protecting Movable Objects Protecting A China CabinetValuable china and other collectibles can be protected by arming a china cabinet with either recessed or surface mount magnetic contacts.
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