规格说明:	Intelligent road studs (YDM pedestrian crossing systems) Idea guidance system for pedestrian crossings This simple, low-maintenance modification significantly improves the safety of pedestrians on crossings Studs automatically flash when pedestrians are in the detection area (sensors/movement detectors) Warning sign with movement sensor LEDs automatically flash, when pedestrians are in the crossing area (movement sensor), besides, all road studs flash at the same time Low-maintenance power supply via solar cell/battery or connection to mains power (protective low voltage) Can be used as an independent system or in combination with two pieces of solar signs Recommended configuration: at least 3 studs per lane Solar remote road stud Flash at the same time Size: Dia. 116 x 21mm Weight: 0.29kg Luminous intensity: 8000-12000mcd Working temperature: -20 to +70 Compression resistance: 10 tons LED color: red, white, yellow, green, blue Controller + detector (for remote road stud) Control radius: 50 meters Control way: by antenna/radio With solar system Power supply: solar cell DC 12V / 10W or mains supply (mains adapter/protective low voltage) Scope of delivery: two signs and a set of studs Optional functions: Solar-power pack: additional solar cell/battery for extremely unfavourable locations Detection and triggering by means of radar, which identifies vehicles exceeding a speed threshold