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Andover Continuum

Single source solution for HVAC and electronic access control

A Building Management System offering energy-efficiency, monitoring and support services tailored to your specific operational needs.

Andover Continuum
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        Presentation

        The DO-4 Andover Continuum building management system’s digital output module, has four Form C relay outputs, rated at 5A at 240 VAC. These versatile outputs make the DO-4 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. Two adjacent Form C relay outputs can be combined in software to provide a Tri-state output, for bi-directional control of valves and dampers and other end devices. Metal oxide varistors and 5,000 V isolation on each output ensures reliable noise-free operation.

        Choose the DO-4 module with the configuration that matches your application:

        • DO-4-R: 4 Form C relay outputs
        • DO-4-R-O: 4 Form C relay outputs with overrides
        The DO-4 is available in RS-485 and FTT-10A versions.