20 DB NE555 állítható frekvenciájú impulzusgenerátor modul Arduino Smart Car-hoz
20PCS NE555 adjustable frequency Pulse generator module for For Arduino Smart Car
100% Brand new and high quality!    
On-board chip NE555    
A single channel output, the output duty cycle square wave is about fifty percent    
Onboard adjustable resistance, resistance can be controlled to adjust the output frequency    
Best choice for yourself or your friendYou will not be disappointed!    
Specifications:
Color: Blue    
Working voltage: 5-12V    
Size: 29 (mm) x12 (mm)    
Package included:
1x Pulse generator module
32742674716 - suq