The TMAS7LABC21-21A | E15Z01P31 from CommScope is a Tower Mount Amplifier with Frequency 698 MHz to 2.155 GHz, Power 300 W, Current 210 mA, Voltage 7 to 30 V, Frequency TX 728 MHz to 2.155 GHz. Tags: Module with Connectors. More details for TMAS7LABC21-21A | E15Z01P31 can be seen below.