Smoke Grenade (4e Future Equipment)
From D&D Wiki
Level 1 Simple Consumable Equipment
Cost: 25 credits
Weight: 1 lb
Benefit: Single-use singalling or temporary screening device.
This simple grenade creates a plume of smoke that quickly disperses. They are used for signalling, and to create a temporary screen to facilitate an advance.
Power: Consumable ♦ Zone
Area burst 1 within 10
Effect: Squares in the burst create a zone of smoke. The zone is heavily obscured until the end of your next turn.