1.PD 18W kulipira mwachangu, kuthamanga kwambiri
2.PCBA sitima yanzeru, kulipiritsa khola, otetezeka ndi amphamvu
3.tumizani kuzindikirika kwanzeru kwa IC, komwe kumapezeka pazinthu zonse zam'manja zanzeru
4.PC lawi zosagwira chipolopolo, ndithudi otetezeka
5.kupatukana dzina patent, yekha chitsanzo chabwino
Phukusi Kukula: 60 / bokosi 240 / katoni