XRR16-5SPDT Expansion Reed Relay Controller 16-Channel .5A SPDT 16 - Amp Reed Relay(s) Expansion Interface Expansion Series $0.00 Full Description> XRR16-5SPST Expansion Reed Relay Controller 16-Channel .5A SPST 16 - Amp Reed Relay(s) Expansion Interface Expansion Series $262.00 Full Description>