Maximum display, minimum size

The design of the TOPLINE 2016 is vertically oriented and perfectly fits the handlebar stem with the sleek design. The new shape allows for improved display options of the functions. This means, for example, that the speed of the BC 23.16 STS is shown in large characters and is always visible in the three-line display.

Height x width x depth:
66,5 mm x 44 mm x 12,5 mm

Height x width:
30 mm x 45 mm


Button functions

Button functions


  • Press and hold button: opens Settings
  • Short button press: backward through Bike/ Alti/ Heart rate/ Lap menu

„Alti“(bottom left)

  • Forward through the Alti functions

„Heart rate“(bottom middle)

  • Forward through the Heart rate functions

„Bike“(bottom right)

  • Forward through the bike functions

„Lap“(below display)

  • Short button press: starts new lap
  • Press and hold button: opens Lap menu

Animated menu navigation

Small graphics facilitate the orientation in the BC 23.16 STS menu. They show workout graphics in the height profile and settings menu field. A scroll bar indicates where you are currently.

menu navigation


Digitally encoded three-channel wireless transmission

The tried-and-tested SIGMA TRANSMISSION SYSTEM (STS) is the digitally encoded transmission system for all transmitter data from the speed transmitter, the cadence transmitter, and even the heart rate transmitters for the high-quality basic devices and top models. The transmitters collate the data they have received and send this to the receiver integrated into the computer as a data package. The transmitters also regularly send stored test data for data comparison purposes.

The digital encoding of the SIGMA TRANSMISSION SYSTEM prevents transmitter data from being corrupted by external interferences such as power sources or other transmitters. The interference of Sigma products, e.g. LED lights, can also be prevented.

STS transmitter

New STS transmitter

The STS transmitter has a movable mounting foot, which ensures an optimal mounting of the transmitter in every situation. Transmitter and magnet can therefore always be installed in parallel. This results in a more stable radio transmission.



Light on, quite simple. Enable light mode and the display is illuminated with every other push of the button.



The BC 23.16 STS is waterproof according to the international standard IPX 8. This means there is "protection against permanent immersion". Nothing stands in the way during the next ride in the rain.


Both new magnets (normal & power) are equipped with a click-mounting mechanism. This makes installation even easier. Devices can also be removed without tools.


Cadence magnet

Cadence magnet

The new cadence magnet can be attached directly on the inside of the pedal without further aids. Since it is very thin, the risk of friction with the transmitter is avoided even in tight spaces. In order to function well with larger distances from the sensor or with non-magnetic pedal axles, two plastic clip holders for the magnet are also included in the delivery.