The 2-18A from Bird is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 3, 6, 10, 20, 30 dB, Power 2 W, Weight 2.5 oz, 71 g, 0.071 Kg, Operating Temperature -40 to 40 Degree C. Tags: Module with Connectors. More details for 2-18A can be seen below.