NE555 CD4017 IC LED Electronic Lights Kits Red Blue Dual-Color DIY Kit Strobe Electronic Suit Flashing Lights Components DIY

modname=ckeditorSupply voltage: 9-12V (DC, recommended 12V)  Board size: 9.2 * 3.2CM  This kit uses NE555 and CD4017 chips to form an analog alarm light circuit. The blue LED and red LED flash alternately according to the pulse, and the flashing frequency can be adjusted by adjusting RP1. The working voltage of the circuit is DC9-12V, and the kit does not include a power supply (battery). This kit is easy to make, has obvious effects, and is highly entertaining, suitable for electronic enthusiasts and vocational school students to practice and assemble.  Tip: If the two types of lights are low voltage LEDs, 9V can be used, but the blue light used in this kit requires a higher voltage, so the power supply voltage needs to be 12V.