5 "LCD zaub, kov npo ua haujlwm.
Tso zis ib theem, ob theem lossis peb theem tus qauv lossis cov teeb liab siab.
Ntsuas polarity thiab tso saib cov kab vector ntawm thawj thiab theem nrab.
Tsis siv neeg ntsuas peb theem thiab ib theem transformer piv thiab xam piv qhov yuam kev.
Cov txiaj ntsig kev xeem tuaj yeem raug xa tawm thiab xa mus rau lub computer los ntawm USB thiab txhawb nqa excel spreadsheet qhib.
Txhawb nqa ntawm qhov chaw xeem ntawv luam tawm los ntawm Bluetooth lossis serial tshuab luam ntawv (yeem).