Use To Amplify The Cell Phone Signal In Fleet Vehicle; Works With Cellular Service Provider AT And T/ T-Mobile/ Verizon/ Sprint/ US Cellular; Voice/ Text/ 4G Data; 50 decibels (dB) Maximum Gain; With 4G Signal Amplifier/ 12 Volt Hardwire Power Supply/ Outside NMO Antenna/ 3/4 Inch NMO Mount/ Inside Antennatable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Ltl Freight Required: f