a device containing light-emitting and light-sensitive components, used to couple isolated circuits
Today’s NYT Connections Answers Jan 3, #572 - Daily Updates & Hints
Today’s Wordle Answer Jan 3 #1294- NYT Wordle Hints & Updates
NYT Mini Crossword Answers Today - The Mini for Jan 3 Solved
NYT Strands Today - Hints, Spangram & Answers for January 3