No magnets. WonÛªt interfere with magnet-sensitive equipment. This Pull-String Fall Alarm Monitor features a cord that attaches via a garment clip to the residentÛªs clothing. When the resident attempts to get out of their chair or bed, the tension on the Fall Alarm Pull-String Cord causes the switch to pull away from its position, causing the monitor to sound, alerting the caregiver of the residents departure. Adjust the Cord Stop to desired Pull-String length for the residentÛªs comfort and also to prevent false alarms. A Velcro strap is included for easy mounting. This Pull-String Monitor has a 1-Year Warranty.