Signaling devices with M12 plug - ready configured.

M12 connection technology is a widely used standard in the industry. Therefore, Pfannenberg offers a wide range of ready configured signaling devices.

Whether visual or audible signaling devices, combined devices in all performance classes or signal towers and obstruction lights – all of these signaling devices can be integrated into your systems and applications even faster thanks to M12 connection technology.

The advantages of M12 connection technology in brief:

  • Increased machine and plant safety by avoiding wiring and connection errors, since the devices no longer need to be opened for assembly.
  • Circuits do not have to be interrupted or switched off during maintenance, conversion or replacement of devices – this saves time and money.
  • Assembly and set-up times are considerably shortened or simplified.
  • One of the most important criteria in mechanical and plant engineering is met - safety in connection technology.
  • High flexibility and acceptance by planners and users due to simple plug-in technology.

Pfannenberg signaling devices with an optional M12 connection:

Standard PIN assignment

In addition to the supply voltage, which is available on PIN 1+ and PIN 3-, the external tone selection on PIN 2 and 4 can be used, for example, for devices of the PATROL® series.


Likewise, the operating modes of the QUADRO signal devices can be controlled on PIN 2 and 4. In the case of the PA X visual-audible combination, the sounder and the flashing light can be controlled separately. With the PYRA® RGB light, the colors can be determined.