No it is not a digital...
I think it is a Rena Cal Basic Water Heater
http://www.drsfostersmith.com/product/prod_Display.cfm?siteid=6&pCatId=3891
It is a 300 watt and you just set it at the temp setting 80 and it stays there I promiss.....Plus if you drain your tank and forget to unplug it, no worries, automatic shut off! It is cheap and works great....
Best one I have had so far....
By the way...It is not digital,
Look at it like this, You can go to walmart and buy a camera one is a throw away, the other is $600 digital, DON'T THEY BOTH JUST TAKE PICTURES?
You just want this thing to keep your water at a constant temp. So save your money get one that works and spend more money on corals!
Later
Clay