A signal requesting device for attachment to a pole of a traffic light system. The signal requesting device has a top cover and a housing base, the top cover has an opening for a switch module, an insert ring protruding from the lower side of the top cover, the housing base has an opening with an opening diameter corresponding to the insert ring. A tight fitting of the insert ring within the opening enables simple locking of the top cover by means of a single screw.
SIGNAL REQUESTING DEVICE
2018-04-12
Patent
Electronic Resource
English
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |