This circuit is energy saving LED flasher. There is the light checking sensor. When the area is getting dark, LED will flashing periodically, that's make this circuit live longer. It is suitable to use as a nevigator lamp on-off switch in the dark, or to be a caution lamp circuit for bicycle.

Technical information

- Power supply : 3VDC. (CR2032 battery not included)
- Duration of battery : 1200 hour.
- Frequency of flashing : 0.5 second.
- PCB dimensions : 1.42 x 1.49 in.