The Netsavers Line Conditioner utilizing automatic voltage correction and conditioning, produces a clean, filtered, sinewave output, that is better for your computer system. A surge suppression device that clamps a surge voltage to a limited value.
Gas tubes are very slow, but can handle very large surges.
The main problem with the use of gas tubes in AC power circuits is that when they clamp the surge they momentarily short out the utility line which usually trips the circuit breaker feeding the circuit which the tube is connected to. In this case the operation of surge clamping leads directly to power interruption. They are well suited to use in data line surge suppression, but have protective clamping voltages that are too high to provide effective protection for most modems or computer ports.