The MS50-20 from Shanghai Huaxiang Computer Communication Engineering is a Fixed Attenuator with Frequency DC to 1.5 GHz, Attenuation 30 dB, Power 50 W, Weight 1.135 kg, Attenuation Accuracy ±0.8 to ±1.5 dB. Tags: Module with Connectors. More details for MS50-20 can be seen below.