CALIFORNIA WARNING: This product can expose you to chemicals, including lead and DEHP, which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, go to https://www.p65warnings.ca.gov.
3 position infrared opto transmitter board used in Capcom AIRBORNE pinball machine in conjunction with A0018501-S receiver board.
Reference:
A0018401 transmitter board assembly
A0018501-S receiver board assembly