Z-Wave is a wireless communications protocol used primarily for home automation. It is oriented to the residential control and automation market and is intended to provide a simple and reliable method to wirelessly control lighting, HVAC, security systems, home cinema, automated window treatments, swimming pool and spa controls, and garage and home access controls. Like other protocols and systems aimed at the home and office automation market, a Z-Wave automation system can be controlled via the Internet, with a Z-Wave gateway or central control device serving as both the Z-Wave hub controller and portal to the outside.Z-Wave was originally developed by Danish startup Zen-Sys and later acquired by Sigma Designs in 2008. There are over 1,500 interoperable Z-Wave products marketed under different brands, and over 35 million have been sold since 2005.