M2 Cardiac Cycle Sensor

The M2 Cardiac Cycle Sensor, more easily known as the Heartbeat Sensor, is a heartbeat detection system that can detect the presence of a person by sensing the minute vibrations caused by human and faunus heartbeats.
==History==
What became the M2 Cardiac Cycle Sensor first began with its prototype, the XM1. The XM1 was incredibly limited in function compared to the M2, with a much more bulky design to match. The XM1 worked like a scanner, having to be pointed in the general direction of a target in order to function properly. It only had an effective range of ten meters.
After receiving feedback from SENTINEL field operatives, the R&D Unit worked tirelessly to create a better heartbeat sensor, resulting in the M2.
==Appearance==
The M2 resembles a tablet with a green display screen and is only slightly larger than a fully extended Scroll. When switched on, the screen lights up, displaying a half polar coordinate map. The M2 visibly wipes from the bottom center outwards as it scans the immediate area. Any detected targets show up on the map as a bright green dot, friendly or otherwise.
==Specifications==