Overhead Door Magnetic Contacts

Used for overhead doors in both industrial and residential situations where a wide gap is present
Adjustable to fit most door-channel widths
Switch contained in curved low-profile cast-aluminum housing for surface mounting on garage floor
Magnet enclosed in epoxy compound inside aluminum case for direct installation to garage door with no projecting bracket to break or serve as a handle
2³/₄” (70mm) Gap
24″ (61cm) wire leads enclosed in armored cable
Contact reed switch is SPST, deactivated rhodium on gold under-plating, for a long life
(For NO/NC circuits, use SM-226R-3Q)
Lifetime limited warranty

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Used for overhead doors in both industrial and residential situations where a wide gap is present
Adjustable to fit most door-channel widths
Switch contained in curved low-profile cast-aluminumhousing for surface mounting on garage floor
Magnet enclosed in epoxy compound inside aluminumcase for direct installation to garage door with noprojecting bracket to break or serve as a handle
24′′ (61cm) wire leads enclosed in armored cable
Contact reed switch is SPST, deactivated rhodium ongold under-plating for a longer expected life
For closed loop circuits (SM-226RQ)
For open/closed loop circuits (SM-226R-3Q)
23/4′′ (70mm) Gap
Lifetime limited warranty

Model		SM-226RQ	SM-226R-3Q
Circuit type		Closed loop	Open/closed loop
Operation gap		23/4′′ (70mm)
Material	Switch	Heavy-duty cast-aluminum case
	Terminal	24′′ (61cm) armored leads
	Magnet	Enclosed in epoxy in aluminum housing
Contacts		Deactivated rhodium on gold under-plating
Contact rating		0.1A@100VDC (max)	0.02A@100VDC (max)
		1.0A@10VDC (max)	0.2A@10VDC (max)
		10W (max)	3W (max)
Temperature		-15°~160°F (-25°~70°C)
Switch cycles		50 Million (0.1mA@5VDC)
Switch dimensions		411/32′′x13/4′′x27/64′′ (110x44x11mm)
Magnet dimensions		335/64′′x15/16′′x127/64′′ (90x33x37mm)
Magnet type		Alnico 5

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