Danger signal (5,4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">danger signal</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for alarm bell that I've seen before include "It rings as a warning" , "Warning sound" , "Warning signal" , "Warning device" , "Ring it to signal danger" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">danger signal</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for red flag that I've seen before include "Socialist banner?" , "Warning to stop" , "Socialist symbol" , "Emblem of socialist revolution or danger" , "Sign of danger - sign of socialism" .)