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Expandable Sequential 4 Relay Expansion
This expandable unit allows for sequential control of 8 relays, expandable up to 256. Relays will turn on for a user selectable time, (all relays share a time) and cycle to the next relay after a user-defined pause. The unit can also be set for manual control where two contacts will allow you to cycle “Forward” or “Backward” through the relays.
Eight Relay expansion available Here
Controller Unit available Here