Profile: A C Systems, Inc. is a manufacturer of mission critical power, cooling, and monitoring systems. Our products include Emerson® network power, Liebert® and PQI®. Our Liebert PSP Stand-by UPS, 350-650VA is featured with UPS that delivers power protection in a compact package. The UPS provides battery-backed outlets, and a surge protection-only outlet. The UPS battery offers four minutes of backup power at full load ample time to shut down protected equipment if an outage occurs. Our UPS system is available with Liebert off-line, and line-interactive UPS systems, which is suitable for home and small office applications. These systems provide surge suppression, as well as sufficient battery back-up to save work in the event of a power outage.