Electronic deer alert. Trailblazer works better than other warning devices. Produces a proprietary sound that can be heard by animals. Warning can be heard from more than 1/4 mile. Mounts almost anywhere under the hood. Can be installed to turn On and Off by using the included dash mount switch, by switching the ignition, or by turning on the high beam headlights. Will not clog with dirt, debris, or grime which make many other animal warning devices inoperable. Rugged and weather-resistant. 12V, 103 dB.