 A UV curable elastomer with a novel dynamic hierarchical cross-linking network is developed that can be stretched up to over 800% and rapidly recover at 300% strain, making it suitable for real-time transmission of electrical signals in flexible electronics. The stretchable conductors serve as a strain sensor exhibiting excellent stability and repeatability after 10 cycles at 20 to 50% strain with low signal drift and hysteresis. and can be utilized to recognize different bending angles of the finger, making DLP printing of conductive elastomer a viable strategy for rapid manufacturing of flexible electronics. This article was authored by Chengdu, Henghao Yang, Chengyin Wang, and others.