This simple traffic signal concept where 2 manual battery operated lights – Red, Yellow, Green can be triggered on/off via simple 3 way switch.
For more information…
Website: www.scienceprojects4all.com
YouTube Video on latest science projects: https://www.youtube.com/scienceprojects4all
Facebook Page: https://www.facebook.com/scienceprojects
Indiamart Page: https://www.indiamart.com/scienceprojectsindia/ For more information please feel to get in touch with us
Website: www.scienceprojects4all.com
Facebook Page: https://www.facebook.com/scienceprojects
Post time: Jun-19-2017