Programmable context aware alarm devices and methods

A device comprising:

• an outer case having an external geometry comprising:
• a cylindrical segment, where two planes defining upper and lower surfaces of a truncated cylinder are parallel to one another and perpendicular to a longitudinal axis of the cylindrical segment,
• a base having a plurality of holes within a predetermined pattern,
• a cover having another plurality of holes within another predetermined pattern, and
• a cylindrical wall;
• an electronics module disposed within the outer case, the electronics module comprising a casing within which are disposed a battery and a microprocessor-based control circuit, the casing comprising a first case portion housing the battery and preventing motion of the battery under an impact between the device and another object, and a second case portion housing the control circuit and preventing motion of the control circuit under the impact, each of the first case portion and the second case portion comprising a circular bottom portion and a cylindrical wall portion, the cylindrical wall portions abutting, each circular bottom portion being substantially parallel to the base and cover of the outer case when the device is assembled, each cylindrical wall portion comprising an inner wall, an outer wall, and a plurality of radially disposed ribs each joined at one end to the inner wall and at a distal second end to the outer wall;
• and
• a pair of acoustic resonators, each acoustic resonator of the pair of acoustic resonators being attached to the first case portion and the second case portion at predetermined locations;
• a pair of acoustic signal generators coupled to the control circuit, the acoustic signal generators generating at least one audible signal whilst the device is at least in motion, each acoustic signal generator of the pair of acoustic signal generators being disposed within a chamber formed by an acoustic resonator of the pair of acoustic resonators, the first case portion, and the second case portion;
• wherein the outer case provides mechanical protection for the electronics module under impact.