The ST-23-411 from Pulsar Microwave is a Analog Phase Shifter with Frequency 1.8 to 2.2 GHz, Phase Shift 180 Degree, Insertion Loss 2.8 dB, Control Voltage 0 to 15 V, Power 5 dBm. Tags: Module with Connectors. More details for ST-23-411 can be seen below.