Li-heaters tsa ho qoelisoa tsa Screw plug li loketse ho futhumatsa metsi ka ho toba, ho kenyelletsa le mefuta eohle ea oli le tharollo ea ho futhumatsa mocheso. Lintho tse futhumatsang li na le hairpin e kobehileng 'me e ka kenngoa kapa e kenngoe ka har'a plug ea screw, ho itšetlehile ka sheath ea element le ho lumellana ha thepa ea plug.Libaka tse koaletsoeng ka morero ka kakaretso ke tse tloaelehileng 'me li na le libaka tse ka ikhethelang tse thibelang mongobo, tse thibelang ho phatloha le libaka tse hanyetsanang le ho phatloha/mongobo tse fumanehang ho khotsofatsa litlhoko tse khethehileng tsa ts'ebetso.Li-thermostats tsa boikhethelo li fana ka taolo e bonolo ea mocheso ho heater ea plug ea ho qoelisa ea screw plug.