Which code corresponds to the description 'Home control stick relay'?

• A. H
• B. HS
• C. GK
• D. K

Answer: (B)

Interpreting signaling codes often uses compact letter pairs where the first letter signals the location or function and the second letter names the device type. For a description like “Home control stick relay,” you want a code that encodes both elements: Home and stick relay. The first part is Home, coded with H, and the second part is stick relay, coded with S. Putting them together gives HS, which directly represents “Home control stick relay.” Other options either capture only one element, like Home, or point to different devices altogether, so they don’t convey the combined meaning. HS is the best match.