Pros are price, build quality, ease of programming (youtube videos). That being said there is a cupped shape piece that needs to be installed although on most door knobs it is built in, this one you must install in order for the latch to work. You might need a helper to hold some of the stuff while you attach parts together etc. One quirky thing is if you going to go in your house and the deadbolt is unlocked before you go out when you try to come back in with the door unlocked it will make a noise and lights but will not do anything making you think it forgot the combination when you just forgot it was unlocked already. What can I say?