EMP Grenade (5e Equipment)
From D&D Wiki
EMP grenades release an electromagnetic pulse that, while harmless to living things, wreaks havoc upon electronics.
As an action, you can throw an EMP grenade at a point up to 60 feet away. Creatures whose bodies incorporate electronic circuitry, such as androids and robots, within 20 feet of an exploding EMP grenade must make a DC 15 Dexterity saving throw or take 10d6 lightning damage and be stunned until the end of its next turn. On a successful save, a creature takes half damage and isn't stunned. Electronic objects within the blast, such as alarms and computers, are fried instantly unless they are properly shielded against EMP effects.
Weight: ½ lb.