The thermometer’s buzzer sound is quiet and difficult to hear.

The buzzer sound comes from the small hole located near the center of the back of the thermometer. If this hole is covered by your armpit, the sound may become muffled and difficult to hear. If you hear a “beep” when you turn the power on, the thermometer is functioning normally. If no sound is produced at all, the thermometer may be defective. Please contact us.

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