Repel birds and wildlife with loud thunderclap
This rugged system will deliver a harmless "thunderclap" equivalent to a 37mm cannon (130 decibels). Operates from your 5-gal. liquid propane (LP) cylinder (not included), requires no electricity or battery. Optional accessory (Item No. RABRP) allows cannon to rotate 360°. Fires at an irregular interval, approximately three times in 25 seconds, followed by four detonations in one minute. Operates 10 days on 5-gal. LP tank (not included). Imported.
2013 Master Catalog: Page 520