Tshiab style guard checkpoint, dav dav tsos, haum rau tsev so, chaw ua hauj lwm vaj tse, tsev kawm ntawv, khw khw, tsev kawm ntawv thiab lwm qhov chaw nrog siab yuav tsum tau rau cov tsos.125kHz ua haujlwm zaus, sib xws nrog tag nrho peb cov neeg saib xyuas saib xyuas.Ib qho yooj yim installation, tsis muaj thaiv.Luminous, tuaj yeem pom ntawm qhov chaw tsaus, tsis xav tau luminous daim ntawv ntxiv.