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Tags containing device information designed for asset identification using radiofrequency (RF) signals that also include humidity sensors. These tags frequently consist of electronic chips with antennae that can transmit data using RF electromagnetic radiation. RF tags may include batteries to power an attached radio transmitter (active tag); other tags work with the RF energy supplied by a location device (passive tags). Some tags include batteries only to supply energy to the internal circuitry or to the attached humidity sensor (semi-active tags) but not to generate RF signals. Humidity sensor asset identification tags are usually attached to the surface or inside of assets such as warmers, refrigerators, and freezers. The tags are used mainly as components of alarm, recording, and/or monitoring systems of the relative humidity in the equipment and/or environment in operating rooms, clinical laboratories, pharmacies, or other health facility areas; they are also used to track the humidity conditions of the assets during storage and/or transportation.
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