Iyo WP421AChinotumira chinodzvanyirira kumanikidzwa kwepakati nepakati uye tembiricha yepamusoro chakagadzirwa nezvinhu zvinopinzwa kunze kwenyika zvinodzivirira tembiricha yepamusoro, uye sensor probe inogona kushanda zvakanaka kwenguva yakareba patembiricha yepamusoro ye350℃Maitiro ekubatanidza ne laser cold anoshandiswa pakati pepakati nesimbi isina ngura kuti inyungudike zvachose kuita chinhu chimwe chete, zvichiita kuti transmitter ive yakachengeteka mumamiriro ekupisa kwakanyanya. Pakati pekumanikidzwa kwesensor ne amplifier circuit zvinodzivirirwa nePTFE gaskets, uye heat sink inowedzerwa. Maburi emukati e lead anozadzwa ne high-efficiency thermal insulation material aluminium silicate, iyo inodzivirira kupisa zvakanaka uye inoita kuti amplification uye conversion circuit part ishande pakupisa kunobvumidzwa.