Portable: What does the flashing light mean on the power indicator? June 11, 2024 19:08 The flashing amber lights on the power indicator show that the device battery is low and you need to recharge it. Related articles Portable: How long does the SlumberCalm™ Portable Sound & White Noise Machine last on a full charge? At Home: I am pressing the control buttons on the front of the product and nothing is happening. What should I do? At Home: Does the The SlumberCalm™ 2-in-1 Sound Machine & Night Light come with a plug? At Home: How long does it take to fully charge the SlumberCalm™ 2-in-1 Sound Machine & Night Light ? How does SlumberPod's ventilation work?