APC LR1250 4AC outlet(s) 120V White surge protector

Line-R 1250VA Automatic Voltage Regulator The Line-R 1250 automatically corrects sags and overvoltages by boosting low voltage and stepping down high voltage to levels that are safe for you system.The Line-R 1250 prevents data loss and keeps your system up and running even through extended brownouts and overvoltages. The Line-R 1250 automatically performs a self-test each time you turn on the system to ensure that it is running correctly. Front panel indicator lights alert you to line voltage status. A rear panel indicator light diagnoses common wiring problems such as reversed polarity, missing ground and overloaded neutral. Superior multi-stage surge suppression prevents catastrophic equipment damage and prolongs system life. EMI/RFI filters prevent line noise from corrupting your data.