The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From HKC Technology Limited:
HKC Green i-Home A complete Home Automation Control of lighting, curtain, HVAC, AV andSecurity specifically designed for your ipad. Taps and gestures bring you the comfort, caring, convenience and connectivity. Current Versionruns in portrait mode only. The application will need a pre-programmedautomation controller from HKC to communicate with the automationsystems via WiFi. Green i-Home application and system are provided by Hong Kong Communications Co., Ltd Features:- Scene Control- Lighting Control- Curtain Control- Audio and Video devices Control- Security Alarm Control