Andover Controls DO-4

The DO-4, Andover Continuum’s digital output module, has four Form C relay outputs, rated at 5 A @ 240 VAC and are an excellent choice for switching motor starters and other inductive loads up to 240 VAC, with either two position (on/off) or pulse-width modulation (PWM) control. The PWM feature permits the modulation of valves and dampers to 0.1 second resolution.

A DO-4-R-O model with full override capability is also available. Each output has a local hand off- auto switch, which enables service personnel to override the output. The switch also provides override feedback of the output value for use in troubleshooting or test conditions. A local indicator light for each output displays relay status. Another LED provides override status.