Tripp INTERNET550SER Ups 550va 300w Desktop Battery Back Up Compact 120v Db9 Rj11 Pc - 550va-300w - 3.5 Minute Full Load - 4 X Nema 5-15r, 4 X Nema 5-15r - Surge-protected

Voltage compatibility - 120VAC Frequency compatibility - 60 Hz Output volt amp capacity (VA) - 550 Output watt capacity (watts) - 300 Output nominal voltage - 120V Output voltage regulation - LINE MODE---Passes sine wave line voltage from 100-141V to connected equipment unchanged , BATTERY MODE---PWM sine wave output 115V above or below 5 percent Output frequency regulation - LINE MODE---Passes line frequency of 60Hz above or below 10 percent , BATTERY MODE---Inverter output regulated to 60Hz above or below 0.5Hz Outlet quantity / type - 8 NEMA 5-15R Maximum input amps - 12A Input connection type - NEMA 5-15R Input cord length - 6 ft., 16 gauge Recommended electrical service - 15A, 120VAC BATTERY - Full load runtime---3 minutes (550VA) , Half load runtime---10 minutes (275VA) , Typical battery lifespan---3-6 years, depending on usage , Battery recharge rate---2-4 hours to 90 percent Front panel LEDs - 2 LEDs indicate line power, battery power status Alarms - Audible alarm indicates battery backup operation Switches - Power on/off switch AC surge suppression - 380 joules Dataline suppression - Tel/DSL AC suppression response time - Instantaneous EMI / RFI AC noise suppression - Yes