An attachable device that can be mounted to the outside of a tool (for example, the M18 FUEL™ 1" SDS Plus Rotary Hammer) that can monitor the vibration of the tool in application, notify the user using a logic signal (LED indicator) if they begin to exceed the 5 m/s2 threshold, and monitor how long the user exceeds the 5 m/s2 threshold in a given workday.