QS0012 tshiab ultrasonic nas repellent thiab kab repeller, 360 ° tag nrho-surround scanning emits ultrasonic nthwv dej kom tshem tau nas thiab kab tsuag hauv txhua qhov kev qhia, npog ntau yam kev tiv thaiv ib puag ncig yam tsis muaj kev cuam tshuam.