All 5 LEDs blinking from top to bottom indicates what?

All 5 LEDs blinking from top to bottom indicates what?

• A. Batteries completely depleted (dead)
• B. Calibration required
• C. Power supply failure
• D. Sensor fault

Answer: (A)

Five LEDs blinking in sequence from top to bottom is signaling a total power depletion. When the batteries can no longer supply voltage, the system uses this full-stack blinking pattern to warn you that there’s no usable power left, so the device won’t operate until fresh batteries are installed or a power source is restored. This pattern is distinct from other fault indicators, which would show different blink sequences or LED behaviors (calibration, power supply issues, or sensor faults each have their own patterns). In practice, replacing or recharging the batteries resolves this condition.

Five LEDs blinking in sequence from top to bottom is signaling a total power depletion. When the batteries can no longer supply voltage, the system uses this full-stack blinking pattern to warn you that there’s no usable power left, so the device won’t operate until fresh batteries are installed or a power source is restored. This pattern is distinct from other fault indicators, which would show different blink sequences or LED behaviors (calibration, power supply issues, or sensor faults each have their own patterns). In practice, replacing or recharging the batteries resolves this condition.