Hayes Energize III 81741B Medium/Heavy Duty Electronic Trailer Brake Controller-Brand New-SHIPS N 24 HOURS. Condition is Brand New (Package Has Shelf Wear From Retail Store But Product Is New And Unused). Brand: Hayes Model: 81741B Energize III Medium/Heavy Duty Electronic Trailer Brake Controller. Shipped with USPS First Class Mail . You Will Receive 1 ea Hayes Energize III 81741B Medium/Heavy Duty Electronic Trailer Brake Controller-Brand New-SHIPS N 24 HOURS. RARE VINTAGE COLLECTIBLE SHIPS N 24 HOURS Packed By Our Award Winning Packaging And Shipping Department Long Time E-commerce Seller For Over 20 Years LIMITED AVAILABILITY Follow Our Store For All New Rare Products Posted Daily and Specials Please click https://www.ebay.com/usr/boughtnowcommerce Inventory Box Number: 932 Energize III Hayes Medium/Heavy Duty Electronic Trailer Brake Controller The Energize III brake controller contains our patented deceleration sensing device to automatically monitor and measure tow vehicle deceleration to provide smooth proportional trailer braking. The Energize III reacts instantly to any change due to brake petal effort, to apply trailer brakes at the same rate as the tow vehicle brakes and is capable of panic stopping. For use on all trailers (Horse,Utility,RV and Commercial) with 2 or 4 electric brakes. Wide range of mounting positions and pendulum adjustability. Red (L.E.D.) light monitors controller performance and trailer wiring integrity. Built-in short circuit protection from trailer brake wiring. Mounting hardware,bracket, and installation instructions included.