Security Alarm Metal Proximity Reed Switch Door Magnetic Contact for Security System

Product DescriptionWired Magnetic Switch - Surface Mount: Detecting door gap by opening, Be used to detect door, window, or drawer if it is opened or moved. It is widely used for monitoring and security system, with high reliability, small size, easy installation and operation and strong flexibility.  Features-Detecting door gap by opening - Connecting mode: N.C. (N.O.& changeover  available) - Installation: install outwardly Security Alarm Proximity Reed Switch Magnetic Door Contact for Security System   Product Parameters Specifications Operating distance(Gap): 15~25mmHousing:  ABS ,whiteInstallation: install outwardlyPackage:Product Size: 27*14*8mmInner packing:    20sets / PE           Outer packing:   1600 sets / cartonGross Weight:    20.0KGRemarks:             4 screws including                               with double-sided tapes sticked on the bottom, 3M brand available  Related Products /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1