Digital Antenna PowerMax Cellular Amplifier - DA4000 Add power and reliability to your cell phone in any application with the PowerMax™ DA4000 3 watt cellular amplifier. A direct connect amplifier is the best solution in areas of extremely low outside cellular signal or when optimal data connections are your top priority. A cell phone or air card physically attaches to the DA4000 via an adapter cable. Maximum input power is 2 watts. DUAL BAND: FCC and IC approved for use with all North American cell phones operating on 850 or 1900 MHz (except Nextel or iDEN). EuroAsian model also available. Application: Vehicles, boats, RVs, cars, homes and offices Range/Performance: Amplifies cellular signal up to 50+ miles * Solution: Designed for areas of extremely low outside cellular signal and when optimal data connections are top priority Advantage: Universal use; cell phone or air card physically connects to amplifier via an adapter cable * Increased range varies based upon height of outside antenna, type of cable used, cell phone carrier, and location of cell tower. For maximum range, place outside antenna as high as possible using ultra low-loss cable. DA4000 Includes: 3 watt dual band cellular signal amplifier ( DA4000 ) 12 VDC cigarette style power cable included ( DP742 ) 2’ of DA240 cable with mini-UHF male connectors ( 240-02MM ) External antenna and adapter cable sold separately