Interface   1x Serial RS-232 (DB-9) Port  Output Power Capacity 3000VA / 2700W  Softwares Available, APC PowerChute Smart-UPS Bundle   Input Power Voltage 160 - 286 Vac, 50 - 60 Hz  Output Power  Voltage 230Vac Response time meets UL 1449 Surge energy rating 480 Joules Weight 62.73 kg Filtering 0.3% IEEE surge let-through : zero clamping Response time Meets UL 1449  Dimensions (483 x 133 x 660 mm) WHD Back-Up Time Half Load Internal Battery : 15 Minutes   Internal Battery + 1 SUA48RMXLBP3U : 63 Minutes   Internal Battery + 2 SUA48RMXLBP3U : 124.3 Minutes   Internal Battery + 3 SUA48RMXLBP3U : 186.6 Minutes   Internal Battery + 4 SUA48RMXLBP3U : 249.3 Minutes   Back-Up Time Full Load Internal Battery : 5.4 Minutes   Internal Battery + 1 SUA48RMXLBP3U : 21 Minutes   Internal Battery + 2 SUA48RMXLBP3U : 49.6 Minutes   Internal Battery + 3 SUA48RMXLBP3U : 80.3 Minutes   Internal Battery + 4 SUA48RMXLBP3U : 111.6 Minutes   Surge Energy Filtering Full time multi-pole noise  Battery Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof  Form Factor Rackmount 3U  Warranty 2-years Limited Warrranty by Authorized Distributor