PowerWalker MBS is used as an external power distribution unit in conjunction with UPS systems or large-scale voltage regulators. It allows to manually transferring the connected equipment to utility power via a bypass switch, permitting scheduled maintenance or UPS replacement without power interruption. Combined power distribution feature and the master/slave controlled design, it provides maintenance bypass function and power saving within a compact mechanism.Supports following models:VFD Series: VFD 600 IEC, 800 IECVI Series: VI 1000, 1400, 2000, 1000 LCD, 1500 LCD, 2000 LCDVI 1000RT/1500RT/2000RT/3000RT LCDVFI Series: VFI 1000/1500/2000/3000 LCDVFI 1000RT/1500RT/2000RT/3000RT LCD- Provides continuous power to connected equipment during UPS maintenance- Master/Slave outlets design for energy saving- Easy operation with simple rotary switch- Plug-and-play connectivity for both input and output- Suitable for all UPS up to 3000 VA