mikester,
The GoldLine/Hayward AquaLogic PS-4 is capable of controlling 5 circuits with a very minimal upgrade. Six circuits is even possible, but then you are only able to control two valves. The cost is very reasonable at only $59.39 at this site (disclaimer - I have no personal experience with this online pool store).
http://www.a1poolparts.com/-strse-1210/ ... Detail.bok
The pool store text above is not very clear, but I am relatively sure that this kit only supplies one relay for the $59.30 cost. If one were predisposed to add two circuits to an AquaLogic PS-4, then you would need to purchase two of these relay kits.
Titanium
The GoldLine/Hayward AquaLogic PS-4 is capable of controlling 5 circuits with a very minimal upgrade. Six circuits is even possible, but then you are only able to control two valves. The cost is very reasonable at only $59.39 at this site (disclaimer - I have no personal experience with this online pool store).
http://www.a1poolparts.com/-strse-1210/ ... Detail.bok
Goldline Controls Aqua Logic AC Relay Kit
SKU: AQL-RELAY-AC-KIT
Add 1 additional relay to your P4 or two additional relays to your PS4 with this kit.
You can add 1 relay to your P4 by connecting this relay to the "Valve 3" port in your controller. If you have a PS4, then you can connect up to two relays to the "Valve 3" and "Valve 4" ports. Includes relay and connector.
The pool store text above is not very clear, but I am relatively sure that this kit only supplies one relay for the $59.30 cost. If one were predisposed to add two circuits to an AquaLogic PS-4, then you would need to purchase two of these relay kits.
Titanium