An environmental sensor device includes a detection assembly comprising at least one response component that is responsive to receipt by the detection assembly of an environmental stimuli exceeding a threshold. An arming assembly is configured to maintain the detection assembly in an unarmed state. The arming assembly includes a collecting element and a retention element coupled to the collecting element. The retention element is positioned to prevent the at least one response component from being responsive to the environmental stimuli. The collecting element is configured to collect energy that causes an ablation of the retention element to place the detection assembly in an armed state.

Systems and methods include reception, for each of a first plurality of consecutive time periods, of an acceleration value associated with a first location of a structure, determination of a first value of a first indicator based on absolute values of the acceleration values, determination of a second value of a second indicator based on absolute values of differences of consecutive one of the acceleration values, determination of a first value of an index based on the first value and the second value, determination of a physical characteristic of the structure based on the first value of the first indicator and the first value of the index, and transmission of an alert based on the physical characteristic.