By far the easiest smart device I’ve ever had to deal with. Easy setup - talks to everything - batteries have lasted a few weeks so far and all is good - if I have to change them a few times a year so what?! Just ordered some eneloop rechargeables. So happy I got this.  Note - I don’t care about Auto Unlock and lock - never tested it and I don’t want that feature - I’m using Apple Watch to unlock and lock it or keypad and they work no problem!