Hayward Goldline PL-PS-8-V Pro Logic 4 relays 4 additional soft keys 4 valves 2 heaters solar Truly user friendly and cost effective automation Digital display of time, day, temperature of pool/spa and ambient air Built-in keypad for complete operation and programming Controls up to 16 relays, 8 valves, 2 heaters and solar Fully programmable, automatic control of every output