Clearline's 12-00220 Duoline Series protects your computer, printer, scanner and modem against lightning and surges without additional earthing. The protection modules have multiple stages of protection capable of blocking severe lightning and power surges. Clearline incorporates a fast overload device which will be activated in extreme conditions.

Functional indication lamps display the protection status of the unit. Clearline’s unique built-in thermal protection devices eliminates fire hazards.