T-UGS

A Tactical Unattended Ground Sensor or T-UGS is a deployable motion sensor. It collects seismic, acoustic, radiological, and electro-optic data to track any movement in its range. The T-UGS can track, classify, and identify any target within its range and relay it to across the network in almost real time to a platoon size element of soldiers as an early warning device.

Battlefield 3
The T-UGS is a gadget in Battlefield 3 as a part of the Recon class and replaces the Motion Sensor of the Bad Company series for the Recon Kit's ability to track targets. Players may deploy one on the ground and can only use one at a time. The T-UGS is stationary, larger than a motion mine, can be destroyed, and will beep when detecting movement. Motions sensed by the device will only show the user briefly on the minimap for about half a second.

If a player crouches or prones within range of an enemy T-UGS, they will not be detected. The player can walk into range of a sensor, get detected, crouch, sneak away and either destroy the beacon or move and ambush anyone nearby who goes to investigate their position.

During the beta, the T-UGS did not function properly.