Seco-Larm SM-226RQ Pack of 3 ENFORCER Overhead Door-Mount Magnetic Contact, Closed Loop, Adjustable to Fit Most Door-channel Widths, 2-3/4" (70mm) Gap, 24" (61cm) Wire Leads Enclosed in Armored Cable Key Features: - 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 - 24" (61cm) Wire leads enclosed in armored cable - Contact reed switch has deactivated rhodium on gold under plating for a longer expected life - For closed loop circuits - 2.75" (70mm) Gap - Weatherproof IP66 Specifications: - Loop Type: Closed loop - Electrical Configuration: N/O - Operation Gap: 2-3/4", (70mm) - Material - Magnet: Enclosed in epoxy in aluminum housing - Material - Switch: Heavy-duty cast-aluminum case - Material - Terminals: 24" (61cm) armored leads - Contacts: Deactivated rhodium on gold under-plating - Contact Rating: 0.1A@100VDC (max), 1.0A@10VDC (max), 10W (max) - Switch Cycles: 50 Million (0.1mA@5VDC) - Magnet Type: Alnico 5 - Switch Dimensions: 4.33 x 1.73 x 0.43 inches (110 x 44 x 11 mm) - Magnet Dimensions: 3.54 x 1.29 x 1.45 inchex (90 x 33 x 37 mm)