5 pair MC-38 Wired Door Window Sensor Magnetic Switch Home Alarm System Detector

Specification:Brand newColor: whiteMaterial: ABSDimension: approx. 27 x 14 x 8(mm)Switch pattern: N/C normally closed,, alarm-on-brokenVoltage: 100V DCRated power: 10WActuation distance: 15-25mmWire lead: 24 Awg, about 350mm longMounting method: SMD (by screws or double-sided tapes)Recommendations in application: wooden door, windowFeatures:Easy installation Reliable performanceGood characteristic of abrasion-proofBest Choice for you to protect familyThere are two types of reed switches: ''normally open'' reed switches and ''normally closed'' reed switches. The metal reeds on a normally open switch stay open when there is no magnet near the switch. In the presence of a magnetic field, the contacts of a normally-open reed switch will close. A normally-closed reed switch is closed when it is not near a magnet; as a magnet is brought close to it, a normally-closed switch will openPackage included:5 pair x door magnets ( note: packaged doesn't included screws )