Crydom solid state modules

IXR has several International Rectifier Crydom solid-state-relay style I/O modules
donated by the Thomas Kirk estate 
black:  6411  AC output 3.0A 120V
        6412  AC output 3.5A 240V
red:    6311  DC output 3.0A 60V
yellow: 6201  AC input  120V
        6202  AC input  240V
I downloaded some of the spec sheets: