BPS-120 Back-up Power System for Managed Switches For enterprises/Telco requiring high service level, high reliability networks - Provides a redundant external power source to networking devices - Features 6 power ports to connect up to 6 external networking devices - Temperature, power and fan speed monitoring The ZyXEL BPS120 is a stand-alone backup power unit designed to connect up to 6 external networking devices. When the internal power unit of one such device fails, the BPS provides power instantly to the failing device to prevent it from rebooting. Despite up to six devices can be connected, only one can be powered by BPS120 at the same time. The output rating is 12VDC 120 watts. The single rack-mount BPS-120 unit can combine with the ZyXEL L2/L3 Enterprise switch with inline power, as well as an UPS to create a Centralized Power Provisioning System. Current supporting models are, ZyXEL Dimension ES-3124, ES-4024A, GS-3012/F, GS-4012F and GS-4024 Specification AC Input Voltage 100 – 240V AC 50/60Hz Power Overload protection (Power module fuse) 1.8A Max internal universal power supply 120W per port 12V DC output Power consumption 180W maximum (AC) Operating Temperature 0°C ~ 45°C (32°F ~ 113°F) Storage Temperature -25°C ~ 70°C Operational Humidity 10% ~ 90% (non-condensing) Weight 4.0Kg Dimension 19" Rack mountable 440(W) x 270(D) x 45 (H) mm