Sound like you have set a specific time for yours to open and close. I'm using the light sensor to (hopefully) adjust itself as the days lengthen and shorten.
Sorry, new user here. I installed the omlet door today and sat around waiting after sunset for the door to close. I used the default setting of 6 to close and that was fine, except for the 20 minute delay. It was nigh on dark by the time it closed. Can that 20 minute delay be removed? Otherwise...