The mini surface screw mount magnetic contact switch set is a component used in residential or light commercial security systems to monitor the status of doors and windows. this set is designed for surface mount installation, allowing for straightforward placement on various frames. it operates as a closed loop (n/o) contact switch, providing a signal when the magnetic contact is within range. the unit includes a protective cover to shield the internal components from environmental exposure. it is capable of maintaining a gap distance of up to 1" between the magnet and the switch, which allows for flexibility during the installation process on different types of entry points. the switch is finished in black, providing a neutral appearance that integrates with standard architectural hardware. this contact switch set is intended for use in electronic security circuits where reliable monitoring of entry points is required. the set is supplied with the necessary components for a standard surface mount configuration, ensuring it is ready for integration into existing security systems.