BTH02 data logger measures and stores up to 32000 humidity(0 to 100%RH) and temperature(-35 to 80?(-31~176?)) readings. Dew point and more professional applications can be provided by the PC software DGraphTM. Logger status alarm indication and low battery indication are via flashing red/green LED and yellow LED. The button on housing can be used to start logging or confirm and clear LED alarm when LED alarm is hold status. User can plug data logger straight into PC’s USB port without any cables. Before getting started user need to install USB driver and DGraphTM software provided on the CD which is included in product packing box. All the software can run under Windows XP Vista 7 or 8(32 bit and 64 bit Versions). User can easily use DGraphTMsoftware to setup sample rate(from 10 seconds to 12 hours) high/low alarm limit and start/stop method and download data to PC etc. And then user can view analyse and print the data or export other file formats(txt xsl csv bmp jpg). Especially for some professional applications user can set access password name each channel enable/disable specified channel input calibration data for each channel disable LED indication for saving power and select sample mode(Instant Average Maximum and Minimum) etc. This data logger is used mainly to monitor and verify humidity&temperature-sensitive goods equipment or areas. e.g.: Shipping Food Pharmaceutical Warehouse Museums Buildings Computer Rooms Communications Equipment Containers Aircraft Cabins Equipment Run Time Laboratories Libraries HVAC Refrigeration Agriculture and Livestock Greenhouses Environmental and Weather Monitoring BENEFITS Portable precise compact and low cost Easy to log and analyse data Unique and uniform PC software DGraphTM can meet your higher requirements Elaborate design make it perfectly work in more application field Strict design ensure long term reliable work Enhanced electrostatic protection design to prevent unexpected damage Each unit have single serial number identified by DGraphTMsoftware to manage data simply All data from different data logger and all different measurement parameters can be graphed and analysed together FEATURES USB interface directly communicate with PC for setup and data download User can set access password for data logger User can name each channel and enable/disable specified channel freely LED alarm enable/disable LED alarm hold enable/ disable and alarm limit settings for all channels via DGraphTM User can input formula to customize compound graph from selected logging data User can create and customize new unit easily and freely for all measurement parameters Logging status indication via red/green LED and battery status indication via yellow LED Start logging method: Immediately Button Delayed User can input two point calibration value for each channel when setup Dew point calculated via software DGraphTM IP66 environmental protection Long battery life: Approx. 4 Years @ 10 Minute Sample Rate