The Liberty SJ10A Sumpjet Water-powered Back-up Pump makes sure that your basement is kept dry during power outages. It comes with an indoor alarm that runs at 115V with a 9V back-up battery. It has a compact probe-mounted sensor and auxiliary contacts with audio and visual alarm. It is powered by the municipal water supply so it does not require electricity to operate. This factory pre-assembled pump has a discharge size of 1-1/2" NPT. It comes with a diaphragm switch. The pump's performance data and other details are available in the specification sheets. This Liberty SJ10A Water-powered Back-up Pump is fully automatic. It is equipped with a ¾" Sharkbite water inlet connection. It comes in a compact design. It includes an adjustable stainless hose clamp for quick and easy mounting. It features a built-in backflow valve. It can handle temperatures of up to 130 degrees F. More details are available in the specification sheets. The Liberty SJ10A Water-powered Back-up Pump is covered by a standard Limited Warranty for a period of 3 years. This product proudly bears the CSA mark and is recognized for meeting the required environmental performance standards. Liberty, the company that makes and innovates high quality pumps is relied on by hundreds of professional contractors each day. Liberty has been cited as one of Rochester's Top 100 Companies for twelve years.