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    • 1. 发明申请
    • Sensor Indicator
    • US20220326062A1
    • 2022-10-13
    • US17709026
    • 2022-03-30
    • Ramin NajafiKelly Farideh Farhangi
    • Ramin NajafiKelly Farideh Farhangi
    • G01F23/00G01F23/80G08B5/36
    • In one implementation, the specification discloses a liquid level sensor and communication device, system and/or method. In some implementations, the communication light weight portable, interactive device for personal or interpersonal non-video communication using voice messaging comprising a substantially thin polylateral shaped housing unit comprising: a) a front cover, a back cover and side walls connecting the front cover with the back cover; b) a digital sound recording unit configured with a manual switch for activating and recording a message; c) a digital sound storage unit; d) a playback unit configured with a manual switch for activating and playing back the recorded message; e) a microphone; and f) a speaker; and optionally, i) a light emitting device (LED) indicator or an audio indicator or a combination thereof, for indicating or alerting the presence of a recorded message; and/or ii) a manual ON/OFF switch for turning on and turning off the device when the device is not in use; wherein the sound recording unit, sound storage unit, playback unit, microphone and speaker are configured to allow a user to record a message and playback the message using the manual switches; and methods for using the device and/or iii) on/off switch also have a learning mechanism, by placing the unit on the empty part of the container and pressing on/off a number of times. Then the unit will learn the specifics of the bottle and will react to the filled portion of the bottle.