In 2008, Zensys received investments from Panasonic, Cisco Systems, Palamon Capital Partners and Sunstone Capital. In May 2006, Intel Capital announced that it was investing in Zensys, a few days after Intel joined the Z-Wave Alliance. In 2005, Bessemer Venture Partners led a $16 million third seed round for Zensys. They formed the Z-Wave Alliance, whose objective is to promote the use of Z-Wave technology, with all certified products by companies in the Alliance interoperable. The technology began to catch on in North America around 2005, when five companies, including Danfoss, Ingersoll-Rand and Leviton Manufacturing, adopted Z-Wave. Z-Wave's 800 series chip was released in late 2021, with improved security and battery life over the 700 series. The Z-Wave Long Range (LR) specification was announced in September 2020, a new specification with up to four-times the wireless range of standard Z-Wave. It is designed for devices built on the 700 platform. In July 2019, the Z-Wave Plus v2 certification was announced. Its 700 series chip was released in 2019, with the ability to communicate up to 100 meters directly from point-to-point, or 800 meters across an entire Z-Wave network, an extended battery life of up to 10 years, and comes with S2 and SmartStart technology. Its 500 series chip, also known as Z-Wave Plus, was released in March 2013, with four times the memory, improved wireless range, improved battery life, an enhanced S2 security framework, and the SmartStart setup feature. Its 100 series chip set was released in 2003, and its 200 series was released in May 2005, with the ZW0201 chip offering high performance at a low cost. That year, Zensys introduced a consumer light-control system, which evolved into Z-Wave as a proprietary system on a chip (SoC) home automation protocol on an unlicensed frequency band in the 900 MHz range. The Z-Wave protocol was developed by Zensys, a Danish company based in Copenhagen, in 1999. 4.2 Network setup, topology and routing.There is a growing number of interoperable Z-Wave products over 1,700 in 2017, over 2,600 by 2019, and over 4,000 by 2022. Z-Wave provides the application layer interoperability between home control systems of different manufacturers that are a part of its alliance. Like other protocols and systems aimed at the residential, commercial, MDU and building markets, a Z-Wave system can be controlled from a smart phone, tablet, or computer, and locally through a smart speaker, wireless keyfob, or wall-mounted panel with a Z-Wave gateway or central control device serving as both the hub or controller. It is a mesh network using low-energy radio waves to communicate from device to device, allowing for wireless control of smart home devices, such as smart lights, security systems, thermostats, sensors, smart door locks, and garage door openers. Z-Wave is a wireless communications protocol used primarily for residential and commercial building automation. Wireless standard for intelligent building networks Z-Wave
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