PowerShield VoltGuard 1500VA/750W Voltage Regulator, protects sensitive equipment from voltage fluctuations, 2-year warrantyThe PowerShield VoltGuard AVR will monitor the voltage level to protect sensitive electronics from brownouts and over voltages. This cost effective compact device will provide a constantly regulated output voltage ensuring that your sensitive electronic equipment is always receiving voltage within an acceptable range. This VoltGuard has included as standard, over voltage and under voltage protection which will turn off the supply to your equipment