Level: Sorcerer 2, Wizard 2
Components: V, S, F/DF
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Area: 20-ft.-radius emanation centered on a point in space
Saving Throw: None
Spell Resistance: No
Your mind seems to expand as a mystical sixth sense begins observing the target area.
Attentive alarm sounds a mental or audible alarm each time a creature of Tiny or larger size enters the warded area or touches it. A creature that speaks the password (determined by you at the time of casting) does not set off the alarm. You decide at the time of casting whether the attentive alarm will be mental or audible.
Mental Alarm: A mental attentive alarm alerts you (and only you) so long as you remain within 1 mile of the warded area. You note a single mental “ping” that awakens you from normal sleep but does not otherwise disturb concentration. A silence spell has no effect on a mental attentive alarm.
Audible Alarm: An audible attentive alarm produces the sound of a hand bell, and anyone within 60 feet of the warded area can hear it clearly. Reduce the distance by 10 feet for each interposing closed door and by 20 feet for each substantial interposing wall. In quiet conditions, the ringing can be heard faintly as far as 180 feet away. The sound lasts for 1 round. Creatures within a silence spell cannot hear the ringing.
Regardless of how you are alerted by attentive alarm, you immediately know the type and number of creatures that triggered the spell. This effect applies only to creatures that cross the boundary during the round in which the spell is triggered; creatures that come afterward are not automatically detected.
Ethereal or astral creatures do not trigger the attentive alarm.
Arcane Focus: A tiny bell and a piece of very fine silver wire.
Source: Complete Mage, page 96. Applied the changes to the copied text of the alarm spell.