Nice. 2 suggestions.
1st - Add more screws to the bracket holding the latch. I would add another in each of the larger slots, utilizing a washer and coming at an angle near the corner of the 4x4? beam so that you have enough offset from the other screw holes.
2nd - If you are concerned about the wiring, just double up the conductors in the cat5.
Since the open button is on the inside, how do you get in, phone app?
1st - Add more screws to the bracket holding the latch. I would add another in each of the larger slots, utilizing a washer and coming at an angle near the corner of the 4x4? beam so that you have enough offset from the other screw holes.
2nd - If you are concerned about the wiring, just double up the conductors in the cat5.
Since the open button is on the inside, how do you get in, phone app?