This is a magnetic detecting switch set designed to protect doors and windows. It monitors the opening and closing of doors and windows to help improve security and awareness. Key benefits - Reliable door and window protection by detecting open and closed states - Wireless 433MHz transmission for a cable-free connection to your security system - Magnetic sensors with a strong magnet, offering a sensitive response and long durability - Easy to install and use, providing a straightforward replacement for older sensors What to expect - Function: magnetic detection switch that tracks door and window status - Transmission: 433MHz wireless connection to a compatible receiver or security hub - Performance: strong magnets, responsive sensing, durable operation - Installation: quick, simple setup with no complex wiring - Replacement: suitable as a good replacement for older sensors Use scenarios - Home security upgrade: retrofit front and back doors or ground-floor windows to improve monitoring without running wires - Rental properties or multi-unit buildings: install quickly in multiple units for consistent, wireless protection without extensive wiring - Small offices or storefronts: protect entry points with a reliable, low-maintenance wireless sensor system Notes - Brand, specifications, and functions align with a magnetic detecting switch designed to monitor door and window openings in a wireless 433MHz setup - Simple to install and ready to replace older sensors without hassle