Victorshome Magnetic Reed Switch No Surface Mount Wired Door Window Contact Sensor With Cover For Home Security And Burglar Alar

Differences Of Nc, No, Nc/Nonormally Closed(Nc): When The Switch Is Close To The Magnet, The Circuit Is Conductive(Light On); When The Switch Is Separated From The Magnet, The Circuit Is Not Conductive(Light Off).Normally Opened(No): When The Switch Is Separated From The Magnet, The Circuit Is Conductive(Light On); When The Switch Is Close To The Magnet, The Circuit Is Not Conductive(Light Off).Nc/No Combined: The Switch Has 3 Contact Types: Nc/No/Com, You Can Choose To Connect Two Of The Contacts(Nc-Com Or No-Com).Please Notea Magnetic Door Contact Can Only Provide A Switching Signal To The Device. It Cannot Directly Load The Power Supply And Cannot Be Directly Connected To The Lamp.Specifications:Model: Mc-31Contact Type: Nomaximum Sensor Sensitivity: 16Mm(+/-5Mm)Load Current: 150Mamaximum Voltage: 100V Dcmounting Hole Distance: 52Mm / 2.05Inchsize(Approx.):&Nbsp;64 X 20 X 13Mm / 2.52 X 0.79 X 0.51Inch (L*W*H)64 X 13 X 13Mm / 2.52 X 0.51 X 0.51Inch (L*W*H)Housing Material: Abspackage Content:&Nbsp;5Pcs X Magnetic Door Switch20Pcs X Mounting Screws