Contact Sensor for SF20RB Small, magnetic contact sensor designed for window and door monitoring with SF20RB compatible systems. The mini size and magnetic trigger provide discreet open and close detection that is easy to install and integrate. Key benefits Accurate open and close detection for windows and doors, helping you know when an entry point is opened or closed. Mini magnetic design fits narrow frames and tight spaces for a low profile installation that stays out of sight. Direct compatibility with SF20RB systems, enabling seamless integration without additional adapters. Simple installation and placement for quick setup and immediate monitoring. Versatile use for both security and automation tasks where reliable contact sensing is needed. Important attributes Function: magnetic contact sensor for detecting window or door open and close events. Compatibility: designed for use with SF20RB compatible receivers or control modules. Size: mini form factor suited to narrow door and window frames and compact installations. Performance: designed to deliver consistent contact detection for routine monitoring and automation. Construction: compact, surface mount friendly design for unobtrusive placement. Typical use scenarios Home entry monitoring: Mount on front and back doors to receive alerts or trigger scenes when doors are opened or closed. Window protection and automation: Install on ground floor and basement windows to detect opening for security monitoring or to control ventilation routines. Outbuilding and cabinet monitoring: Use on garage doors, sheds, or storage cabinets to track access and support remote alerts or automation workflows. What this sensor solves Adds dependable contact detection to SF20RB based setups without large hardware changes. Keeps monitoring hardware discreet thanks to its mini magnetic design, preserving door and window appearance. Enables simple expansion of security or home automation coverage to more entry points and smaller openings. Compatibility note Intended specifically for systems that support SF20RB compatible contact sensors. Confirm system compatibility before .