ubiquiti powerbeam m2 wireless bridge (pbe-m2-400) ubiquiti networks ubiquiti pbe-m2-400 powerbeam m2 18dbi 2.4ghz airmax 400mm 20km+ poe ubiquiti networks pbe-m2-400 powerbeam m2 has a tight beamwidth, improving noise immunity, ideal for crowded areas. operates on 2.4ghz frequency, with 18dbi. the new powerbeam m has a compact, all-in-one design with uniform beam width, efficient footprint and a faster processor. the powerbeam can be easily mounted in a variety of ways thanks to the innovative mechanical design.