The SIMATIC HMI 6AV6881-0AV21 is the ELO universal touch pen system — the only Siemens touch pen that works with both capacitive and resistive HMI panels out of the box. It includes swappable caps for each touch technology, a 150mm holding cord to keep the pen at the operator station, and a wall-mountable holder compatible with 22.5mm mounting points via screw or adhesive. IP65-rated, built from aluminum and high-grade plastic, and manufactured in Germany, this is the current-generation replacement for the discontinued 6AV2181-8AV20-0AX0.

How does the dual capacitive and resistive system work?

The pen ships with a resistive cap pre-installed and includes a capacitive tip integrated into the pen body. To switch modes, the operator simply swaps the cap — no tools, no configuration. Capacitive touch screens detect the conductive tip through the screen's electrostatic field. Resistive touch screens register pressure applied through the resistive cap. Because the pen carries both tip types, a single unit serves mixed HMI panel fleets where some stations use capacitive panels and others use resistive — eliminating the need to stock two separate pen types.

How is the pen installed at the operator station?

The included wall holder mounts via screw or adhesive to any flat surface near the HMI panel, fitting a standard 22.5mm mounting point. The 150mm holding cord tethers the pen to the holder, preventing loss or drops while keeping the pen immediately accessible to the operator. For food and beverage or washdown environments, the IP65 rating means the pen and holder assembly withstands direct water jet cleaning.

Frequently Asked Questions

Which HMI panels is this pen compatible with?

The pen works with a wide range of Siemens SIMATIC HMI panels — including 6AV6647, 6AV7862, and 6AV2128 series — as well as third-party capacitive and resistive touch screens. If the screen responds to a finger (capacitive) or pressure (resistive), this pen will work with it.

What is the difference between 0AV21 and 0AV22?

0AV21 (this model) is the black version with plastic and aluminum construction. 0AV22 is the polished stainless steel variant. Both offer the same dual capacitive/resistive ELO touch technology. Choose 0AV22 when the operator station aesthetic requires a stainless steel finish or when additional corrosion resistance is needed.