The Onset HOBO UX90-006 Standard Occupancy/Light Data Logger monitors room occupancy and indoor light changes to identify occupancy patterns and determine energy usage and potential savings. The UX90-006 offers 128 KB memory, capable of 84,650 measurements; the UX90-006M model offers an expanded 512 KB memory, capable of over 346,795 measurements.
Note: UX90-006 data loggers require the HOBOware software (free to download) to operate. Please also note that a USB interface cable comes with the purchase of a HOBOware Pro CD (BHW-PRO-CD), only.