Description:
  Take control of traffic lights with this easy-to-use DIY kit! Featuring a countdown timer and sound prompt, you can manually control red, green, and yellow lights with three included light-emitting diodes. No programming required - simply assemble according to instructions for educational or recreational use.

  The traffic light production kit includes everything you need to get started. It includes a timer, sound prompts, three light emitting diodes, and so on. The timer can be set to count down. When the time is up, a sound prompt will notify you. 

  Make your own intelligent signal lights with this user-friendly traffic light making kit. The traffic light making kit is easy to install and use - simply follow the included components list and its pcb silk screen for easy assembly. With just a few simple steps, you’ll be able to make your own intelligent signal lights. Whether you're looking to learn about traffic signal technology or want to create a fun DIY project, this traffic light making kit is a perfect choice.

Parameter:
  1>.Work Voltage:DC 5V
  2>.Work Temperature:-25℃~85℃
  3>.Work Humidity:5%~95%RH
  4>.Size:71x64mm