Automatic safety lock with a magnetic safety switch for electric treadmills that use a round magnet. Provides immediate shutdown if the safety key is removed. Key benefits - Improves safety: treadmill stops instantly when the key is removed, reducing the risk of injury. - Portable and easy to use: lightweight, designed to move between machines and require minimal effort to install. - Simple installation: no complex tools needed; compatible with treadmills that use a round magnetic safety switch. - Reliable magnetic switch system: consistent activation for dependable protection during use. - Durable and compact: built for regular home, gym, and clinical environments while remaining unobtrusive on the machine. Compatibility and performance - Function: automatic shutoff via a round magnetic safety switch. - Compatibility: electric treadmills that employ a round magnetic switch. - Size and design: compact, portable form that fits a range of treadmill models. - Material and durability: constructed for long term use with repeated activation. - Performance: ensures quick, reliable safety response aligned with standard treadmill protocols. Use scenarios - Home gym: attach to your treadmill for safe cardio sessions and easy key management. - Small gym or rehabilitation clinic: move between machines to enforce safety across multiple treadmills. - Demonstrations or rental setups: quick installation for safe treadmill demonstrations or event use.