433 MHz Wireless Magnetic Door Contact for Garage Roller Gates and Shutters A compact wireless door contact that detects open and closed positions and transmits at 433 MHz to compatible GSM alarm systems. Designed for simple installation on garage roller gates, shutters, and doors where wired connections are impractical. Key benefits Improve perimeter security: Detects gate or shutter movement and reports status to a compatible alarm panel so you know when an entry point is opened. Simple wireless integration: Uses 433 MHz transmission for straightforward pairing with alarm systems that accept 433 MHz wireless sensors, eliminating the need for running cables. Quick installation: Small twopart magnetic contact mounts to gate or shutter frames and panels for fast setup and minimal drilling. Reliable detection: Magnetic contact design provides consistent open and closed state sensing for routine security monitoring. Spacesaving form factor: Compact sensor profile fits narrow frame areas and tight mounting locations where larger devices will not. Key attributes Function: Magnetic contact sensor that senses open and closed positions and transmits a wireless alarm signal at 433 MHz to a compatible receiver. Compatibility: Intended for use with GSM alarm systems and control panels that support 433 MHz wireless door or window contacts. Size and fit: Lowprofile twopiece contact suitable for narrow frame applications common to roller gates and shutters. Build and durability: Enclosed sensor housing designed for installation on moving doors and shutters; suitable for residential and light commercial use. Performance: Wireless transmission at 433 MHz for reliable communication within typical installation ranges when paired with compatible alarm equipment. Practical use scenarios Home garage roller gate: Mount the sensor on the gate and frame to trigger the alarm panel if the garage gate opens unexpectedly. Retail or storefront shutter: Monitor shopfront roller shutters after hours and send an alert to the alarm system if the shutter is forced open. Small warehouse roller door: Use with a GSM alarm panel to extend perimeter coverage to loading bay doors and document entry events. Installation and operation notes Mount sensor and magnet on the moving panel and fixed frame aligned for correct open and closed detection. Pair with an alarm panel or receiver that supports 433 MHz wireless door contacts following the panel manufacturer pairing instructions. Choose mounting locations that allow consistent magnetic alignment and clear wireless transmission path to the alarm receiver. Compatibility reminder Designed specifically for alarm systems that accept 433 MHz wireless magnetic contacts for door and shutter monitoring.