ODM2 Equipment Type Controlled Vocabulary ODM2 Working Group A vocabulary for describing types of equipment used for making observations. Examples include sensors, batteries, radios, dataloggers, samplers, etc. Datalogger An electronic device that records data over time or in relation to location either with a built in instrument or sensor or via external instruments and sensors. Datalogger Definition adapted from Wikipedia. See http://en.wikipedia.org/wiki/Data_logger