FSR 404 samfurin shi ne daya yanki ForceSensingResistor tushen FSR 402 ®， Amma akwai rami a tsakiyar zane, wanda za a iya amfani da shi a aikace-aikacen da za a iya shigar a kan cams ko bolts ko wasu manyan sassa. Duk da yake an inganta masu auna firikwensin da yawa a cikin jerin 400 don sarrafa taɓawar mutum na na'urorin lantarki, an tsara na'urar firikwensin don daidaitawa na'urorin buga 3D, iyakantaccen shigarwa da aikace-aikacen da ke buƙatar ƙananan siffofi kamar daidaitawa na gasket. Wannan na'urar layi biyu ce. FSR shine mai ƙarfi polymer thickness film (PTF) firikwensin da juriya za ta rage yayin da karfin da aka yi a kan firikwensin ya ƙaru. FSR 404 firikwensin yana da diamita na waje na 20mm. Akwai rami na 5.5mm a tsakiyar. Yankin aiki na zoben yana da nisan 4.35mm ne kawai, amma an haɓaka ƙarfin ganewar ƙarfi ta hanyar mayar da hankali kan zoben mai aiki a cikin wannan sashin. Standard hanyar haɗi ne walda tag, amma wasu al'ada haɗi zaɓuɓɓuka za a iya samun bisa ga buƙatu. Interlink Electronics FSR 404 wani ɓangare ne na jerin juriya na ƙarfin ƙarfi guda ɗaya.