Alarm

Difficulty: Novice

Casting time: 1 action 

Duration: 8 hours

This device features a large coil spring, a dial, and bells and hammers. For the duration, whenever a tiny or larger creature comes within 30 feet of the device, the device emits a loud audible ringing sound. Any creature that is inside the range of the alarm during activation will be recognized by the device and will not set off the alarm.