KNX TP Push Button 420 secure

The KNX TP Push Button 420 secure is a pushbutton insert with integrated bus coupler and mounting kit. The device is available with one or two rockers. Each rocker offers two pressure points (up/down).

The device is part of our MATCH 55 pushbutton series. With the supplied installation kit, the pushbutton fits mechanically to numerous switch ranges available on the market with internal dimensions of 55 mm. The soft and quiet push-button operation allows the installation in bedrooms and living rooms.


The application offers extensive functions for switching, dimming, blinds, value transmitters, scene and colour control as well as a sequence controller. Each button on a rocker can be configured individually. The flexible operating concept also allows different functions on one button depending on the setting.

The device also contains 10 independent logic or time functions. The device supports KNX Data Security.

  Technical Data

Mechanical data

  • Housing: plastic
  • Insert with standardized PTM form factor
  • Dimensions wall mounting plate: 71 x 71 mm, for flush box 68 mm
  • Rockers for standard frames with internal dimensions 55 x 55 mm
  • Installation depth (KNX connector): 11 mm

Power Supply

  • via KNX bus, approx. 3 mA

User interface

  • 4 push buttons
  • KNX programming button with LED (red)


  • Connector for KNX bus (red / black)
  • Connector for ext. switches / LEDs