Any metal detector can detect underground cables, metal pipe and some explosive objects, in
xaj kom muaj kev nyab xeeb ntawm tus kheej, thov saib cov ntsiab lus hauv qab no.
1) Don't make any detection on any buried cable or pipeline location.
2) Don't detect or touch any possible electric cable.
3) Don't detect or touch any underground pipeline, especially the pipeline with combustible gas or
ua kua.
4) Mining cov khoom hauv av kom tswj tau qhov chaw tsim nyog.
5) Ua raws li cov kev cai lij choj, cov cai thiab cov cai.
6) Tsis txhob qhib lub plhaub tus tswv tsev, cov cuab yeej yuav tsum tau ua tib zoo saib xyuas.
7) Don't let the positive and negative poles of a battery short circuit, don't put the battery into the
hluav taws, txwv tsis pub nws yuav tawg.
