This specification defines a format for representing simple sensor measurements and device parameters in Sensor Measurement Lists (SenML). Representations are defined in JavaScript Object Notation (JSON)@ Concise Binary Object Representation (CBOR)@ Extensible Markup Language (XML)@ and Efficient XML Interchange (EXI)@ which share the common SenML data model. A simple sensor@ such as a temperature sensor@ could use one of these media types in protocols such as HTTP or the Constrained Application Protocol (CoAP) to transport the measurements of the sensor or to be configured.