Ursprungsort
Guangdong, China
Name
custom sound 20 second hand wash countdown timer
Function
Remind people to wash their hand
Sound duration
1-340s, even more if needed
Speaker Size
Diameter 27mm-44mm is available for choice
Switch Option
press button
Battery
2pcs AAA batteries
PCB Size
customized is available
Message
Voice, music, melody, alarm sound are available