Andover Controls DO-4 Digital Output Module

The Andover Controls DO-4 Digital Output Module is Andover Continuum’s four-channel relay output module, delivering four Form C contacts rated at 5 A @ 240 VAC to drive end devices from the Continuum I/O bus. Each channel supports either two-position (on/off) operation or PWM control, with a 0.1-second resolution that enables precise modulation of valves and dampers as well as switching motor starters. The DO-4-R-O variant adds full override capability, and every output includes a local hand-off-auto switch with override feedback to assist repair and testing. This module is intended for building automation applications where reliable control of inductive loads up to 240 VAC is required, integrated with Andover Continuum controllers to coordinate end-device actuation across the system.