XDB403 letoto la li-transmitter tsa khatello e phahameng ea mocheso li amohela mokokotlo oa khatello ea silicon e tsoang kantle ho naha, khetla ea bopaki ba ho phatloha ha indasteri e nang le teba ea mocheso le li-buffer tube, tafole ea ponts'o ea LED, botsitso bo phahameng le sensor ea khatello e phahameng ea piezoresistive le potoloho e khethehileng ea transmitter e sebetsang hantle. Kamora tlhahlobo ea komporo ea othomathike, matšeliso a mocheso, lets'oao la millivolt la sensor le fetoloa hore e be motlakase o tloaelehileng le tlhahiso ea hona joale, e ka hokahanngoang ka kotloloho le komporo, sesebelisoa sa taolo, sesebelisoa sa ho bonts'a joalo-joalo, 'me e ka tsamaisa phetiso ea mats'oao a malelele. .