HOBO by Onset H21-USB Compact size for easy deploymentWeatherproof IP66 enclosure for harsh environmentsDirect USB offload--no need for an adapter cableIncludes five smart sensor inputsHinged door and integrated mounting tabs HOBO USB Micro Station Data Logger Multi-channel weatherproof station for monitoring outdoor environmental conditionsRugged and compact, the redesigned HOBO USB Micro Station is a weatherproof data logger for multi-channel monitoring of microclimates. This battery-powered station accepts up to five plug- and-play Smart Sensors and has a hinged door to make sensor installation simple and quick. The Micro Station is equipped with a built-in USB port for fast, efficient data readout to a computer, and integrated mounting tabs for easy installation.Supported Measurements:4-20mA, Amp Hour, Barometric Pressure, DC Voltage, Kilowatt Hours, Leaf Wetness, Light Intensity, Power Factor, Pulse Input, Rainfall, Relative Humidity, Soil Moisture, Temperature, Volt-Amp Reactive, Volt-Amp Reactive hour, Volt-Amps, Water Flow, Watt Hours, Watts, Wind.In what environment does this data logger operate? This data logger operates in indoor and outdoor environments.