Yam Taw Qhia:

Keyring Electric laj kab Tester nrog hloov, Hluav taws xob laj kab beeper
Yooj yim thiab yooj yim siv rau kev kuaj xyuas koj lub laj kab hluav taws xob.
Emits ib lub suab nrov nrov thaum tuav ze ntawm cov hlau nyob.
Nyob ntawm lub laj kab voltage, nws yuav beep los ntawm li 20cm deb ntawm cov hlau.
suav nrog roj teeb.

daim ntawv thov: