I-WP421B transmitter yokucindezela okuphakathi nendawo kanye nokushisa okuphezulu ihlanganiswe nezingxenye ezibucayi ezimelana nokushisa okuphezulu ezingenisiwe, futhi i-sensor probe ingasebenza kahle isikhathi eside ekushiseni okuphezulu okungu-350℃. Inqubo yokushisela ebandayo ye-laser isetshenziswa phakathi kwe-core kanye negobolondo lensimbi engagqwali ukuze incibilikiswe ngokuphelele ibe yi-body eyodwa, iqinisekisa ukuphepha kwe-transmitter ngaphansi kwezimo zokushisa okuphezulu. I-core yokucindezela ye-sensor kanye ne-amplifier circuit zifakwe i-PTFE gaskets, bese kufakwa i-heat sink. Izimbobo zangaphakathi ze-lead zigcwele i-aluminium silicate, evimbela ngempumelelo ukuqhutshwa kokushisa futhi iqinisekise ukusebenza kwengxenye yesekethe yokukhulisa nokuguqula ekushiseni okuvumelekile.