Hi all, just sharing my frustrations over digital lock (Gateman II) over the last 8 years. Back in 2003 when we bought our condo, we were quite excited to see a digital lock as it was quite novel at that time. As time goes by, I encountered several "issues" which prompted me to want to change back to the good'ol mechanical one. Firstly, I have to check the batteries constantly, or be mindful of changing the 4 AA-sized batteries whenever the tone sounds. Once we got back from an overseas holiday, we didn't notice the batteries were leaking and continue to use it as nothing wrong. Then suddenly one day, it just died! The replacement cost for Gateman (has to be a newer version, as the old on was obsolete) is >$1k! I can almost change the whole door with that. I don't know. Perhaps the technology now has become more stable and reliable.