Sammy at SF Door & Lock is very professional and he worked very fast. Yesterday he came to change the deadbolts locks on both back and front doors in my house. I I’ve purchased 2 new schlage encode plus locks and wanted a professional installation and a full explanation how to use it with our phones.. Sammy was on time and managed to install both locks within half an hour but more significant he spent almost an hour to give us a complete briefing on each and every feature of this specific model. This guy is amazing and we will recommend him to all our friends.