K3 High Quality Automatic Digital Wall Hanging Thermometer

status description1. Standby: The red dot on the bottom of the display lights up in sequence.2. Insufficient power: The horizontal bar lights up in the middle of the display.3. Normal temperature: The green light flashes and the alarm "quotient".4. Abnormal temperature: red light flashes and quotient alarm.5. Default value: L0 ': ultra-low temperature alarm. "HI": Super high temperature alarm.