Militech PDU-3 Multi-Purpose Perimeter Defense Unit

Militech PDU-3 Multi-Purpose Perimeter Defense Unit is a 75mm square x 20mm thick box with a sensor, controls and a microcell power unit. Designed to be sown as perimeter defense or set to discourage pursuit, the unit contains a small but potent explosive charge. The casing is made of ceramic to produce a fragmetation effect over a 5m diameter. The PDU can be set to fire from a variety of triggers or any period of time·delay up to 72 hours. While the unit can accept input from almost any type of military sensor, it comes with a passive IR motion detector and a tripwire. There is also a magnetic or chemical glue strip for attaching the PDU to various surfaces. Militech sells an optional gas-throwing type with no fragments and a similar burst radius.

Source

 * Chromebook Volume 2, pg.42
 * Blackhand's Street Weapons, pg.43