hluav taws xob laj kab buzzer
Qauv: 137.311
handheld zaub ntaus ntawv rau hluav taws xob laj kab.
auditory thiab visual signals thaum lub laj kab muaj qhov hluav taws xob siab.
pom tau yooj yim yam tsis xav tau lub ntiaj teb spike.
suav nrog roj teeb sab hauv.

lub laj kab hluav taws xob buzzer no yog tsim thiab tsim los ntawm peb, peb muaj cov pwm, lub laj kab buzzer no yog siv los ntsuas lub laj kab hluav taws xob hluav taws xob nyob los yog tsis. tsis tas yuav kov lub laj kab hlau, txo qhov kev pheej hmoo ntawm hluav taws xob poob siab, peb kuj tuaj yeem kho nws raws li qhov koj xav tau yog tias koj xav tau.

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