DFRobot Button Cell Battery Holder w/ Batteries 4.5V - FIT0337 hc-sr505 Infrared and optical readings change

Infrared and optical readings change with target color

5" flex sensor analog output Force-Sensitive Resistor (FSR) Square force density level sensor module capacitive touch input

It has a lot of LED indicators with unique functions: PWR indicates that both the board and shield are powered up adequately

Power supply:4-12V

and 4 pwn pins

DFRobot Button Cell Battery Holder w/ Batteries 4.5V - FIT0337 hc-sr505 Infrared and optical readings changeButton Cell Holder with batteries (4. 5V) The Button Cell Holder with batteries (4. 5V) holds batteries and provides a convenient Wire leads (batteries included) output for connecting to your project. Pair with AA or AAA batteries (rechargeable NiMH recommended for motor projects). Technical specifications Output Voltage 4. 5V Cells 3 Output Wire leads (batteries included)