My lock is roughly 2 months old and I've loved the freedom and security it's provided until tonight. I was going out and set the lock but it didn't chime. When I tried again it told "critical battery, lock unavailable." But it had locked itself and I was locked out. Fortunately, I have another door that I haven't yet converted and a hidden key. Not sure what I would have done late on a Saturday night without that key. I have a calendar reminder set for 9 months after the lock was installed to change the battery just so that i wouldn't get in this predicament.
I am widowed and have three dogs. I woke up several mornings and realized I failed to lock up after one or all three dogs got me up to go outside during the night. We have had a crime spree (as has the rest of the country) and I had to figure out how to avoid this happening again. I did not want unwanted guests. I also had to figure out how to enable entry for someone, a trusted individual, to gain access to my home in the event I needed assistance or they needed to do a welfare check. This lock does it all. It automatically locks a few seconds after the door is shut. It automatically unlocks when I have my iPhone with me, to allow my entrance and then locks after entry and door is shut. If I need to let someone in the house for some reason, and I am not close to allow them, I can remotely enable entry.
I wish someone would have told me about the wifi problems with this cartridge. Even though I set up the door lock with 2.4G, my wifi keeps switching to 5G, which is draining the batteries on the lock, and disabling the lock. I have asked the wifi company to disable the 5G, but they are telling me this fix is only temporary. I am just crossing my fingers.