RJ12 oyenda pansi ndi phukusi zida zowunikira ma radioactive ndi zida zowunikira oyenda pansi ndi katundu.Ili ndi mawonekedwe okhudzidwa kwambiri, kuzindikirika kwakukulu ndi nthawi yochepa yoyankha, ndipo imatha kuzindikira ma alarm amoto, kusungirako deta ndi ntchito zina.Njira yodziwira nkhope, yophatikizidwa ndi makina oyika okha, imatha kupeza anthu okayikitsa pamalo omwe mukufuna.Itha kugwiritsidwa ntchito m'malo osiyanasiyana olowera ndi kutumiza kunja, monga malire amtunda, eyapoti, masitima apamtunda, masitima apamtunda, malo ogulitsira, etc.