I can get you one free if you are patient, or I can point you to the one I use on the web, totally up to you. The relays can be wired multiple ways... "normally open" for ATO, but they can also run "normally closed" so that the trigger would be the float switch rising. What would normally turn off the pump could be used to turn something on. That way you could mount a higher float switch, and use it to trigger a buzzer, etc for a high water level alarm.
The base that the relay goes in can also be had with an "on delay". I have one set up that way for the Iwaki on my recirc skimmer... in the event of a power outage, the recirc pump delays two minutes before coming back on once power is restored, so that the feed pump can refill the skimmer. That way the pump can't run dry even for a minute or two. The timer bases are adjustable from .1 to 10 minutes. Pretty versatile to do some neat stuff.
