For the temperature warning device, {HEAD ~ the enclosure} is made of either a transparent or opaque material with {TAIL ~ a transparent window} 
For the temperature warning device , { HEAD ~ the enclosure } is made of either a transparent or opaque material with { TAIL ~ a transparent window }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL