Abstract: A monitoring device is provided herein. The device is configured to reside within an instrument, or within a case for a stringed instrument or other environmentally sensitive object. The device includes a series of detectors. These may be a humidity sensor, a temperature sensor, a motion sensor, a magnetometer and a geo-location sensor. The device also includes a micro-processor that is configured to process signals received from the detectors and create a history of environmental events experienced by the instrument. In one aspect, the micro-processor initiates a signal in the event that a threshold event occurs. A method of monitoring environmental conditions with a case is also provided. Detected conditions are correlated to time and location, and may be analyzed using a remote user processor such as a tablet.