Warning tapes are intended to fence the work area to prevent the access of unauthorised personnel in the respective area. The warning tape for the separation of work areas can be made of textile or plastic foil.

The textile warning tape is usually 40 or 50 mm wide, coloured red.
The textile warning tapes are delivered as 50-m rolls. On demand, warning tapes can also be delivered and installed on rewinders.

The plastic warning tape (usually made of polyethylene foil) is 150 mm wide and is monochromatic with the warning message (red with white text: ELECTRICAL INSTALLATIONS – EXCEEDING IS PROHIBITED), delivered in rolls.