Line-R® Automatic Voltage Regulators Automatic voltage regulation for protection against brownouts and overvoltages. Protect your sensitive electronic equipment from brownouts and overvoltages with APC Line-R automatic voltage regulator. Uncorrected voltage fluctuations gradually degrade the life of electronic components, potentially causing premature failure. The Line-R not only adjusts voltages to safe levels, but also provides surge protection against electrical surges and spikes - even lightning. Line-R 600VA- back Line-R 600VA Line-R 1200VA- back Line-R 1200VA Contact us about APC Line-R