I hired Desmond Lam of HomTech Pte Ltd (http://homtech.com.sg/) to do the entire smart tech for my new house. This includes: mobile app for controlling lights, blinds, aircon on level 1, security system, cctvs, external car/pedestrian gate system, and also fingerprint sensor entry system for the main door and pedestrian gate outside the house. The technology he delivered was TERRIBLE and the service quality was HORRIBLE. The staff did not understand the tech and it kept failing even before I moved in. Simple things like the main gate button kept failing because it was not properly installed or designed (apparently it was not rain proof!). The finger print sensors still do not work in the rain - and I've been complaining for 2 months already! His staff do not know how to integrate all the tech into a single app, so I now have 4 different apps to control the items (eg my security system and my CCTV system are not connected and have two different apps!) in my house, which is ridiculous - especially since some of the apps don't work after just a few weeks! Strongly recommend for everybody to avoid HomTech Pte Ltd and Desmond Lam.