- A photosensitive resistance sensor
- Adjustable sensitivity using potentiometer
- Adjustable sensitivity
- Operating voltage 3.3V-5V
- Digital switching outputs (0 and 1) and analog AO voltage output
- Power indicator
- TTL-level output, TTL output valid signal is low. Driving capability 100MA so, can directly drive relays, buzzer, a small fan, and so on.
- LM393 comparator