Sand Spray Hourglass CR 2
Type mechanical; Perception DC 19; Disable Device DC 16
Trigger proximity; Reset none
Effect blinded 1d4+1 rounds (DC 14 Fortitude negates blindness); dazzled 1 round; multiple targets (all targets in a 10-ft.-radius)
When a PC enters the room, an hourglass flips over and begins to trickle sand for 4 rounds. After 4 rounds, the sand spray hourglass spews forth its sand in a 10-ft.-radius cloud, covering the room and dazzling (and possibly blinding) the occupants. If reset, a sand spray hourglass cannot be triggered a second time.
Sand spray hourglasses are primarily used as deterrents to nosy guests or trespassing intruders. Anyone who lingers too long where they are not wanted gets hit by the trap, while those that are allowed to be there have enough time to reset the sand spray hourglass before it triggers.