The KING Olympus Cellular Upgrade Kit features KING's most powerful booster yet. Using the power of the KING Extend Pro, boost and extend your cell signal providing greater voice and data coverage and speed for all your mobile applications. Designed for RVs, trucks, travel trailers, ice houses, and horse trailers. Supports multiple users and all cellular devices and carriers. KING Extend Pro• Supports ALL U.S. Cellular Carriers• Boosts Voice and Data Range• Use while parked or in-motion• 5G Ready and 4G/3G LTE Voice and Data• No Additional Contract and No Monthly Fees• Roof, Pole, and Ladder Mounting Brackets Included Designed for RVs, trucks, travel trailers, ice houses, & hose trailers Supports multiple users & all cellular devices & carriers Roof, pole, & ladder mounting brackets included