Excessive temperature warning device using warning symbol outside fiber optic cable or light guide

摘要: A device warns that a surface is temperature excessive. light guide receiving from source sufficiently distant the to avoid becoming dangerously hot or cold oriented so in path of beam and transmits through point outside guide. The controlled by controller. predetermined warning symbol typically illuminated when excessive because sensor connected controller ascertains controlling an observer sees In certain embodiments, flexible and/or its second end movable. can illuminate border warn against entry into area which located.