Pulse Mine (Fallout 3)

The  consist of proximity fuse and miniaturized EMP device enclosed in gray metal casing screwed with four screws to the base. Armed status is indicated by four red diodes situated on top of the cover.

Characteristics
The will begin beeping when a target comes within a short distance to it until it is disarmed or it detonates. The time until detonation depends on the Explosives skill of the person setting it off. Both soft and armored/robot targets will activate the fuse.

On detonation, the creates an electromagnetic field affecting any functioning robots and turrets. Little damage to soft targets in close proximity to the detonating device is caused by initiating charge.

The can be disarmed with a high enough Explosives skill or simply avoided with the Perk: "Light Step".

The will become live and likely to cause instant death after it's dropped into NPC's pants (inventory) via theft.

Appearances
The appeared only in Fallout 3.