Wide Applications: This switch can be used for home and public places, especially suitable for office buildings and public places that require fire fighting. < p>EPS power supply: This transfer switch adopted fire EPS power supply interface, DC12-24v can reliably long distance double point. Automatic and Manual: This automatic switch not only supports automatic mode, but also can be operated by manual button, simple operation and reliable performance. Protection function : This switch supports variety protection function, including short circuit, overload, phase failure and undervoltage protection. Easy installation: Reasonable structure, small size, equipped with a protective cover, the power supply is easy to install and reliable.