Alarm Contacts

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Yuasa NP5-12 12V 5Ah Valve Regulated SLA Battery
Yuasa NP5-12 12V 5Ah Valve Regulated SLA Battery
$42.64
IQ QR0041-840 IQ Battery Replacement for the IQ Panel and Plus
IQ QR0041-840 IQ Battery Replacement for the IQ Panel and Plus
$91.73
Wiremold 25DTP-4DG Tele-Power Poles, Designer Gray
Wiremold 25DTP-4DG Tele-Power Poles, Designer Gray
$194.41
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Nascom B505AS/ST Man Door RX/CL Set, Black
Nascom B505AS/ST Man Door RX/CL Set, Black
$25.41
Edwards Signaling 1078C-N Recessed Steel Door Magnetic Contact with Wire Leads, 3/4" Diameter, Closed Loop, 3/8" Gap Size, White
Edwards Signaling 1078C-N Recessed Steel Door Magnetic Contact with Wire Leads, 3/4" Diameter, Closed Loop, 3/8" Gap Size, White
$50.93
Ring Alarm Contact Window and Door Sensors, 2nd Generation, Indoor, Wireless, CR2032 Coin Cell Battery Powered, Z-Wave, 2-Pack, White (B07ZB2RNTW)
Ring Alarm Contact Window and Door Sensors, 2nd Generation, Indoor, Wireless, CR2032 Coin Cell Battery Powered, Z-Wave, 2-Pack, White (B07ZB2RNTW)
$75.51
GRI 401-B W/1K Industrial Surface Mount Switch Set, Standard Gap, Open Loop, Brown, Concealed Terminals, 1K Resistors
GRI 401-B W/1K Industrial Surface Mount Switch Set, Standard Gap, Open Loop, Brown, Concealed Terminals, 1K Resistors
$28.68
GRI 195-12 3/4\\" Steel Door Recessed Switch Set, Standard Gap, 5W, 175VDC, 0.25 Amp, DPDT, X 2, Gray
GRI 195-12 3/4" Steel Door Recessed Switch Set, Standard Gap, 5W, 175VDC, 0.25 Amp, DPDT, X 2, Gray
$28.35
Bosch ISN-CMINI-10 Miniature Contacts (9.5 mm) Image of DS-ISNCMN10W
Bosch ISN-CMINI-10W Miniature Contact, 3/8", 10-Pack, White
$53.85
Potter ODC-56B Series Overhead Door Contact with Fixed Magnet, Form C N.O./N.C. (4410015) Image of AS-ODC56B
Potter ODC-56B Series Overhead Door Contact with Fixed Magnet, Form N.O./N.C. (4410015)
$58.79
Magnasphere HSS-L2D Dual Alarm, Surface Mount Contact Image of MR-HSSL2D007
Magnasphere HSS-L2D UL634 Level High Security Dual Alarm, Surface Mount Contact, Both Closed Loop with Tamper Circuit, Closed Loop
$870.51
Altronix MM12 Mounting Magnets, 12-Pack
Altronix MM12 Mounting Magnets, 12-Pack
$104.28
ADI PRO 0E-DC4811 3" Track Mount Magnetic Contact
ADI PRO 0E-DC4811 3" Track Mount Magnetic Contact
$63.43
Potter AMS-37LG48 AMS-37 Series 4" Industrial Magnetic Contact with 2" Gap, 48" Leads, Gray (4350174)
$29.99
Potter AMS-37L AMS-37 Series Industrial Magnetic Contact, 24" Leads, Form A, N/O, Brown
$22.49

Door & Window Alarm Contacts

Shop door and window alarm contacts for doors, windows, cabinets and perimeter security points. The collection includes magnetic and specialty contact sensors selected for common integration, replacement and expansion needs. Use the category to narrow the options around the job itself, then confirm that each product matches the equipment, cabling and environment already planned for the system.

Alarm Contacts: What to Check Before You Buy

Before selecting a model, compare contact type, gap distance, mounting style, wiring, environmental exposure and alarm-panel input requirements. The surrounding system matters just as much as the individual product, so check cabling, mounting, power and control dependencies where they apply. For upgrades, confirm that new hardware can coexist with the existing infrastructure instead of assuming backward compatibility.