Considered the “James Bond” of chicken coop door openers, the ASTx Extreme automatic chicken coop door opener has all the outstanding features of our other models and much more! Electronics included in this design meet military grade specifications; all controls are encapsulated in epoxy resin; and the motor capacity has been increased to 4kg/8 lbs. There are no minimum or maximum door heights.nThis is the perfect model for those who live in extreme cold/extreme warm conditions (from -25 Celsius to +50 Celsius). The all-in-one design includes an integrated timer and light sensor. Installation could not be easier – simply install outside of your chicken coop, tie the lifting cord to the coop door, and you are finished!nThe ASTx Extreme only needs 4—AA batteries as its energy source. nA configurable fail-safe mode removes any worry as the product closes the door at the programmed time regardless of the light level outside. The door is manually controlled with the press of one buttons. All buttons are large, workable when wearing winter gloves!nComes with a full 3-year warranty.