The ATT20L1P-4215-B5B5 from ETL Systems is a Fixed Attenuator with Frequency 850 MHz to 2.15 GHz, Attenuation 20 dB, Power 0.125 W, Attenuation Accuracy ±0.8 dB, Operating Temperature 0 to 45 Degree C. Tags: Module with Connectors. More details for ATT20L1P-4215-B5B5 can be seen below.