We have foy's doors and they are NO-FAIL. http://www.foyspigeonsupplies.com/electronic-doorkeeper/2101-doorkeeper-inside-installation
I actually have 2 available used, but still perfect, if you are interested, PM me
I think with all the timers, door openers, doors and slats they were over $400 each
They are certainly a life changer!!
Pam ~ (Formally BigDaddysMom) Married 33 yrs, 2 kids, 5 grandkids! Breeding: Polish; WC Black, White, Splash, Black, Silver & Gold Laced & EE's. Black and Blue Copper Marans & Olive Eggers. Layers: EE, RIR, Sexlink, Australorp, Marans! http://www.facebook.com/HighNDryFarm