Description:

• The light-dependent resistor (LDR), also known as a photoresistor, is a particular form of resistor that has no polarity and can be connected in any direction. 
• They are suitable for usage on breadboards and perf boards. 
• The symbol for LDR is similar to a resistor, but it contains inward arrows, as illustrated in the LDR pinout diagram. 
• The light signals are shown by the arrows.