Stun mines target enemies, allies, and neutral characters alike.
The protagonist is never affected by a stun mine.
Stun mines are not triggered by Doppelgängers, allowing Emily to attach one to it and safely knock out groups of enemies.
In The Knife of Dunwall and The Brigmore Witches, stun mines contain two charges, and can be upgraded with a third. In Dishonored 2, they contain a single charge, and can be upgraded with a second and third charge.
The stun mine takes approximately two seconds to become armed once placed on a surface. This process is accompanied by a faint charging sound and a change of color from yellow to blue.
If armed stun mines are damaged before their charge is spent, they will turn red and then explode.
The Chain Lightning upgrade in Dishonored 2 allows a single stun mine charge to take out multiple enemies near to the primary target.
As there is a delay between released bolts, a fully-upgraded stun mine is capable of taking out three groups of enemies.
A single blast from a stun mine overheats a Clockwork Soldier, causing it to shut down for a brief period. Two bolts is sufficient to kill one outright.
It takes a few seconds for a Clockwork Soldier to explode when destroyed, so the stun mine often activates a third time as well, wasting a charge and destroying the mine.
Stun mines can be attached to bottle and then carried around, stunning any enemies near the protagonist, or thrown, stunning enemies at a distance. Upgrading the stun mine increases the effectiveness of these strategies.
In Dishonored 2, a fully upgraded stun mine can be thrown at a group of enemies and knock them all out, and then stun a further two groups of enemies as they come to investigate