How many air curtains are used in a multi-deck open display ...

[rmenurse]

How many air curtains are used in a multi-deck open display freezer?
 
  What will be an ideal response?

Question 2

What are the major differences between relay and solid state logic?
 
  What will be an ideal response?

[enass]

Answer to Question 1

Three

Answer to Question 2

In comparison to relay logic, solid state components have no moving parts. They are sealed from the atmosphere. They take up less space because most of the components are attached to a compact circuit board. They generally cost less and require less power. Most important, they can be more than 1,000 times faster than relays.

[rmenurse]

Excellent

[mcarey591]

Thanks for the timely response, appreciate it