Product Name: Security Alarm Proximity Door Contact Sensor Reed Magnetic Switch for Security System Model NO.: ZDD-412M-4 Certification: CE, RoHS Usage: Door, Window Application: Home, Communication Electronic Products, Industry, Special Equipment Type: Anti-Theft Alarm System: Electromagnetic System Signal Transmission: Wired Function: Detecting Door Gap by Opening Operating Distance: 15~25mm Housing: ABS Installation Method: Surface Mount Installation Position: Door, Window, or Drawer Color: White Connecting Mode: N.C. (N.O.& Changeover Available) Stick: with Double-Sided Tapes Sticked on The Bottom Leads: 22#350mm Cable Length: 350mm Product Size: 27*14*8mm Inner Packing: 20sets / PE Outer Packing: 1600 Sets / Carton Gross Weight: 20.0kg/Carton Accessories: 4 Screws Trademark: ZUDSEC Transport Package: Color Box Specification: CE, RoHS Origin: Shenzhen, China HS Code: 8531901000 Product Description Wired 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 outwardlySpecificationsOperating 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 availableRelated Products: