The PDM-0412-S4 from RF ONE Electronics is a Power Divider with Frequency 4 to 12 GHz, Insertion Loss 1.2 dB, Isolation 18 dB, Input Power 1 W (Combiner), 20 W (Divider), Amplitude Balance ±0.2 dB. Tags: Module with Connectors, Wilkinson Power Divider, Lumped Element Power Divider. More details for PDM-0412-S4 can be seen below.