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Protecting Doors and Windows with Uneven Wiring Holes APPLICATION It 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. Press-fit 3/8" (0.95 cm) diameter switches can actually fall out of over-sized holes even when they initially seem to fit well. This necessitates a costly service call and the use of adhesives (which take time …

Protecting Deeply Recessed Doors APPLICATION Surface Mount Applications Five 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. INSTALLATION Method 1: Magnet with Spacers Sentrol has a range of spacers available for each contact series. Stack spacers until magnet aligns with switch when the door is in the closed position. Me …

Protecting Chain-Link Rolling Gates APPLICATION For 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. This application assures security, particularly when a high-security biased switch is used. INSTALLATION Mount Interlogix switch on fence post using appropriate sized bracket (see Sentrol catalog for bracket selection). Mount multiple m …

Protecting Casement Windows APPLICATION 1 Surface Mount Contacts Using 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. INSTALLATION Important: Anderson recommends against mounting switches in sills due to possible damage from water. If you must drill into the sill, make sure you provide a solid, tight seal using RTV compound. Select position of Interlogix swi …

Protecting Boats Deck and Cabin Protection APPLICATION The 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. Using open circuit switches, a relay, a shunt switch and horn, it is possible to use the boat battery with no power drain. INSTALLATION Install an Interlogix switch and magnet in hatch away from hinges. If hatch is plastic, use surf …