HOBO Temperature Relative Humidity Light External Data Logger U12-012 - Video
http://www.onsetcomp.com/products/data-loggers/u12-012 Learn the features of this temperature, relative humidity, and light data logger with additional sensor plug. Specs covered include the product's temperature range and accuracy rating, humidity range, and light intensity range. External port is discussed with recommendations to be used with CO2, amps/DC current sensors, and more. Recording capacity, battery details, USB port, and data offload is also covered.