Mace Screecher Alarm
The Mace Screecher Alarm, made by the good folks at Mace Brand Products, uses compressed air to emit a very loud alarm.
The Screecher Aerosol Alarm emits an “ear-piercing” blast readily recognized as an emergency call for help.
There is no mistaking it! The high-pitched shriek can actually be heard up to 1/4 mile away! Imagine that? A quarter of a mile!