Abstract: Devices, systems and methods that track various aspects of a person's sleep and environment to optimize one or more aspects of the user's environment and sleep conditions, quality and duration, together or alone, and help make the one or more users maintain and prolong his or her deep sleep status and improve the their sleep duration and quality.

Abstract: A seal for a meter housing with an interior portion is disclosed. The seal includes an axially inner surface configured to face the interior portion of the meter housing and an axially outer surface configured to face away from the interior portion of the meter housing. At least one of the axially inner surface and the axially outer surface is configured to seal against a portion of the housing. The seal further includes a diaphragm defined axially intermediate the axially inner surface and the axially outer surface and a fluid passageway defined through a portion of the diaphragm. The fluid passageway is configured to move between an open position and a closed position in response to a pressure differential between the interior portion of the housing and an exterior portion.

Abstract: A seal for a meter housing with an interior portion is disclosed. The seal includes an axially inner surface configured to face the interior portion of the meter housing and an axially outer surface configured to face away from the interior portion of the meter housing. At least one of the axially inner surface and the axially outer surface is configured to seal against a portion of the housing. The seal further includes a diaphragm defined axially intermediate the axially inner surface and the axially outer surface and a fluid passageway defined through a portion of the diaphragm. The fluid passageway is configured to move between an open position and a closed position in response to a pressure differential between the interior portion of the housing and an exterior portion.