PowerShield's PSH-PSVG1500 is an automatic voltage regulator that 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. As standard, this VoltGuard has over voltage and under voltage protection included, which will turn off the supply to your equipment when the utility voltage moves out of the safe range. The VoltGuard also provides surge protection to protect against transients.