Signal Towers SL7 and SL4

Bright, loud, rugged, fast, efficient, versatile, and unmistakable

With their bright LED technology, the new signal towers SL7 and SL4 increase awareness of machine states as well as boosting perceptibility, especially in adverse light conditions.


Increased awareness is achieved with:

– adjustable volume level
– up to eight different signal types

Their protection type IP66 ensures the signal towers can also be used in adverse environments.

With a special quick-mounting system, they can be removed with a single action and directly reconnected, e.g. for transportation. There are numerous mounting possibilities and with a choice of 40mm or 70mm diameter, the signal towers can be easily adapted to any application. Their efficiency can be further enhanced through connection to the SmartWire-DT system.

  • LED technology for all functions and common voltages
  • High-performance LEDs for increased perceptibility
  • Adjustable volume for various ambient conditions
  • Up to eight different signal sounds
  • Flexible mounting options
  • Communication via SmartWire-DT.

Signal tower SL7: Diameter 70mm
Signal tower SL4: Diameter 40mm

SL7 LED: The SL7 features LED technologies for the following functions:

  • Continuous light
  • Flashing light
  • Strobe light
  • for the voltage ranges 24 V AC/DC, 120 V AC and 230 V AC.

SL7 high-performance LED: The SL7 can also be operated with 24 V AC/DC
High-performance LED technology for enhanced signal effect, with continuous light, strobe light and multi strobe light.


SL4 LED: The SL4 features LED technology for continuous light, flashing light, strobe light and multi strobe light for voltage ranges 24 V AC/DC, 120 V AC, and 230 V AC.


SL7 acoustic: The SL7 has three acoustic modules with adjustable volume levels in voltage ranges 24 V AC/DC, 120 V AC, and 230 V AC:

  • Acoustic module 1: Continuous or pulsed tone, adjustable through DIP switch
  • Acoustic module 2: Continuous and pulsed tone, external actuation
  • Acoustic module 3: Eight different signals adjustable through DIP switch


SL4 acoustic: For the SL4 an acoustic module with adjustable volume level for voltage ranges 24 V AC/DC, 120 V AC, and 230 V AC is available:

  • Acoustic module 1: Continuous or pulsed tone, adjustable through DIP switch.