Q: What do the alarm cues on the device mean?

A: E2 (Fan Failure) - “E2” will pulse and device will beep. Contact customer support assistance. 

E1 (Low Battery) - “E1” will pulse and device will beep. Recharge your Sleep8. Note: The device will function while being recharged.

X (Device Not Connected Properly) - “X” will display next to “O₃” and device will beep 30 for seconds. Press the power button to cancel the alarm.