POSDER ndiyo nhamba yekutanga mutengesi wembiri mbiri magetsi uye mota inodzivirira zvigadzirwa mune yakaderera-voltage magetsi indasitiri.
Iyo kambani ibhizinesi rakasanganiswa rinoita mukugadzirisa, kugadzira uye kutengesa kwesimba rekugovera switch yekudzora michina, magetsi akazara midziyo, magetsi emagetsi, moto alarm yekutarisa uye yekuona michina, yakakwira-voltage midziyo yemagetsi, nezvimwe.