Vdi 400 Keeps Your Cool Uninterrupted! Intelligent Time Delay System – Protects The Compressor In The Air Conditioners From Adverse Effects Of Frequent Power Failure And Erratic Voltage Fluctuation By Providing Proper Balancing Time; Thus Ensuring Longer Life Of The Air Conditioners Low & High Voltage Cut-Off Protection – Isolates The Air Conditioner From Potentially Hazardous Voltages That Can Permanently Damage The Device Latest Ic Technology – The On-Board High Speed Micro-Controller Continuously Monitors The Input Voltage And Acts Instantly During Fluctuating Input Voltages And Stabilizes The Output Voltage By Controlling Regulating Section While On Load Built In Thermal Overload Protection – Dedicated Sensors Protects The Stabilizer And Air Conditioners From High Temperature Burnout During Overload Conditions Wall Mounting Cabinet Design – Attractive Cabinet That Perfectly Blends With House Interiors, Stylish New Display And Easy To Install Smart Display – Digital Seven Segment Display That Shows Real Time Input And Output Voltage Level And Working Conditions Energy Efficient Design – V-Guard Has Always Implemented Stringent Quality Control Measures To Ensure Optimum Output. Our Products And Processes Are Of The Highest Quality And Are Designed To Be Energy Efficient.