Yooj yim, nyab xeeb, txhim khu kev qha thiab ruaj khov
Ua tiav tus kheej tsim los tsim cov duab siab txhais.
Rotary caj npab yog ruaj khov, txhim khu kev qha qhov chaw, ruaj khov heev.
Phab ntsa-mounted hom muaj cov yam ntxwv tseem ceeb ntawm kev nyab xeeb kom tau raws li qhov xav tau ntawm cov chaw kho mob thiab cov neeg mob.
Yog hais tias lub microchip khiav hauj lwm pom ib qho txhaum, timer tam sim ntawd txiav tawm raug.