Magnetic Door Window Contact Sensor NC NO COM 3 Terminal for Alarm System

A surface-mount magnetic contact sensor for door and window security alarm systems. Features 3 screw terminals (NC, NO, COM) for flexible wiring configurations. Includes magnet piece and switch piece with mounting holes for easy installation.

• Type: Magnetic Reed Switch Contact Sensor
• Terminals: 3 (NC, NO, COM)
• Housing: White plastic with mounting holes
• Includes: Switch unit + magnet unit
• Surface mount installation
• Normally Closed (NC) and Normally Open (NO) outputs
• Ideal for: door/window alarm systems, security panels, home automation
• Compatible with most alarm control panels