Your Blast sensor communicates its status through four different LED signals, so you can tell at a glance whether it’s ready to use, low on battery, or asleep.
The Four LED Signals
- Green LED – The sensor is awake, charged, and ready to capture a metric.
- Red LED – The sensor’s battery is low and should be charged.
- No LED – When the sensor stops blinking, it’s in standby or sleep mode.
- Amber LED – The sensor is awake, charged, and ready to capture a metric.
FAQ
What does a green or amber LED mean on my Blast sensor?
Both green and amber indicate the sensor is awake, charged, and ready to capture a metric.
What should I do if my sensor’s LED is red?
A red LED means the battery is low, so you should charge the sensor before your next session.
Why isn’t my sensor’s LED lit up at all?
No LED simply means the sensor has entered standby or sleep mode after a period of inactivity — this is expected behavior, not a malfunction.