Improved Alarm

Manual of the Planes (MP)Updated Supplementals (3.0)

Improved Alarm is a D&D 3.5 spell (Abjuration) from MP. On class lists for Bard (Level 3), Sorcerer (Level 3), Wizard (Level 3), and others. Range or area: Close (25 ft. + 5 ft./2 levels); Saving throw: None; Duration: 8 hours/level (D); Casting time: 1 standard action.

School
Abjuration
Casting Time
1 standard action
Components
V, S, F
Range
Close (25 ft. + 5 ft./2 levels)
Area
25 ft. radius emanation centered on a point in space
Duration
8 hours/level (D)
Saving Throw
None
Spell Resistance
No

As the alarm spell, and in addition the spell works on creatures traveling through the area on coterminous or coexistent planes, such as the Astral Plane, the Ethereal Plane, and the Plane of Shadow.
Focus: A bell made of carved crystal, worth at least 100 gp.