Spectrum Controls RDO-716 Relay Output Module

The Spectrum Controls RDO-716 Relay Output Module is a 16-channel, non-isolated relay output card designed for 120 VAC switching in legacy Spectrum SY/MAX I/O installations. It provides 16 discrete outputs for controlling field devices such as indicators or line-voltage actuators from a Spectrum Controls controller. This module is referenced in replacement guidance as an obsolete part, with the direct replacement option typically being the RDO-732, highlighting its place in Spectrum Controls’ legacy I/O family. For systems needing a 16-point, 120 VAC relay output in Spectrum Controls equipment, the RDO-716 represents the original configuration and is commonly considered within upgrade paths to newer Spectrum Controls I/O modules.