Frame and Door
1 1/2 inch solid
frame, solid aluminum
Brass on aluminum
12 volt DC battery
Frame is 18" tall x 14" wide plus electronics box
Custom circuit running on low-voltage DC battery
Easy single sensor open and close times and reset
No switches, one
How wide the door opens is
programmable and multiple open/close cycles are simple
Torque limited, second-chance door closing
Plywood on plastic or
Mains 120 volt
Good luck when it's
'Walmart' timer tiny
Switches to indicate
No warping, rotting, or binding issues over time. The frame is the reference point for everything else and the door is the one
moving piece. Wood is fine for a
Brass-aluminum. A touch of lubricant twice a year. Plywood is unstable and will 'stick' open sooner or later.
Power isn't often available at the coop. Power outages affect mains power timers and they stopworking. Not true for a battery timer.
Many coops do not have the height available or the'standard' stud spacing to support most doors.
Mechanical timers have failure issues in dirty coop environments and require constant power.
When it gets extremely cold, our circuit compensates and drives the motor harder. When warm, the motor gets less power to limit force.
Plastic pieces are easily lost. It does not get easier than the Pullet-Shut programming
Switches are a high-failure rate problem in coop doors due to dust and humidity. Switch failures equals door failures.
Pullet-Shut lets you define how wide you want the door to open. And after the first day's programmed open and close times you can open or close the door anytime without changing the programmed open and close times.
Pullet-Shut limits the motor torque to avoid injuring chickens if stuck in the door. Every evening the door opens again for 10 seconds after the programmed
close time to let in any 'late' chickens.