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You can write equations within the Expression Editor using typical operators. These equations can connect values from device properties, object properties, and variables. Operators can be basic math functions like +, -, *, /, and % (remainder) that make an expression’s value a number or string. They can also be logic operators that make the expression’s value a boolean. You’ll use logic operators in conditions. These include: 
&& and  
  
|| or  
  
\== equals  
  
!= does not equal  
  
\> greater than  
  
\>= greater than or equal to  
  
< less than  
  
<= less than or equal to
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