The best part about this product was that it did not require any installation or wiring to be done by our employees, which saved time & money! This device also provides remote access from anywhere in the world via its web interface (mobile app coming soon). We were able to make changes remotely without having anyone physically go into each of our buildings. I would say there are some limitations with regards to how many devices can connect at one location. However we have only had 1 problem so far where 2 different people tried connecting their smart door locks together but they kept getting an error message saying "Couldn't Connect". As long as you know what kind of security requirements your site has before purchasing these products then everything will work out fine once installed. Security control over all entrances/exits at my office complex using mobile applications through keycom platform. Remotely locking doors if someone forgets them open.