SYSPRO Commander Provides Total Protection Solution for LED, LCD and Plasma TVs Up to 50". Disruptive Blackouts Tends Create High Voltage Fluctuation. Our Spike/Surge Suppressor and Selected Voltage Cutoff Technology Provides Extra Protection to Your Valuable TV during Power Restoration. In addition, Our Time Delay Technology is the Best in the Market for Restoring the Power Only When it is Safe for Your TV, DVD, and DTH. SYSPRO Commander is Exclusively Engineered to Meet Voltage Regulation Need. Input Working Range: 140 to 290 Volts. Ready for Wall Mounting or to Keep it on Surface.