The ChickSafe Advance automatic chicken coop door opener  is a tough and reliable system for automatically opening your coop door in the morning and closing it in the evening as light levels fall, keeping your birds save and giving you peace of mind. Running on only 4 x AA batteries (included), the ChickSafe Advance hen house door opener is easy to fit to any chicken coop with a vertical sliding (or hinged) door.   The all-in-one design makes setting up a breeze - no messy wiring or limit switches to attach to your coop. Simply secure the control box to the front of your coop with the 2 screws provided, tie the lifting cord to your existing door and you’re away.   No manual calibration is necessary; the ChickSafe Advance automatically adjusts to the height of your poultry house door. The ChickSafe Advance features a novel mechanism with only one moving part and no mechanical switches for ultimate reliability. Weatherproof and made from UV resistant materials it is designed to work in extreme conditions and can lower and raise a door weighing up to 8 Lbs. It features an 'auto-stop' if a chicken is obstructing the door so you can relax in the knowledge that your hens will be safely looked after. Because  the ChickSafe work by detecting light levels and look for slow changes in light they aren't affected by car headlights at night. For your convenience the sensitivity of the falling light level is adjustable and an indicator shows that the door is open, closed if the batteries are low or if there's a fault.   The ChickSafe Advance has a fully digital menu driven controls with a programmable real-time clock timer and full manual door control allowing the user to open or close the door at a set time and to override the automatic system.   By a simple press of a button the user can at any time either open or close the door or hold it in its current position until the override is switched off - handy if trying to isolate birds in the hen house. The ChickSafe Advance also comes with a unique weekend 'lie-in' feature which allows the user to delay the opening of the door in the morning on 2 days out of 7 to a selected time which can be used to keep the birds contained for longer at weekends. Like all Brinsea products it comes with a 3-year .