Motion Sensor

Motion Sensors are an unlockable belt item used by the Technician class. They can be unlocked for 420 Gold or 75000 XP.

Operation
Motion sensors drain energy from enemies when tripped, and provide a warning when tripped or destroyed. If tripped by an enemy player, they also deal 10 damage to them. Technicians can deploy up to 3 motion sensors at a time (4 with the Safety Third perk).

Tactics
Unlike Mines which are usually hidden to cause damage to enemies, Motion Sensors are typically placed in open areas that enemies must pass through in order to reach an objective. This forces the enemy to either set off the sensor or destroy it, which also sets of the alarm. Motion Sensors also temporarily reveal Infiltrators from stealth.