Cost Effective Retrofitting
Previously, there were always several cables necessary to provide for the wide variety of signals from the acoustic unit at traffic lights (among others, walk signal, guide signal and tactile signal). This complexity often created a negative cost effectiveness at previously existing traffic light facilities.
This problem is solved by net.1 which uses an intelligent field bus. The power supply for the push button and the acoustic units as well as the transmission of selected control signals flow through a separate single signal transmission cable between the external facility and the control device. This cable can even be wired in a line topology. Expensive earth excavation work is thus unnecessary and an effective use of existing grounding cable nets is possible. This makes retrofitting existing facilities even more attractive.