Chauvin Arnoux CA 1246 [P01654246] Thermo Hygrometer Datalogging. Whether you need to measure temperature and humidity briefly or over an extended period of time, the Chauvin Arnoux CA1246 is up to the task. A thermo-hygrometer, the CA1246 is designed to simultaneously measure both the temperature and humidity of the air. It can measure relative humidity levels from 3.0 to 98.0% RH and temperature levels from -10.0 to +60°C. The CA1246 is a datalogging thermo-hygrometer; it can store up to 1 million records in its internal memory. The rate at which the instrument logs data is fully adjustable using the software - you can select a start/end date for the logging and also define how often the measurements will be taken (from 1 minute up to 2 hours). Thanks to a built-in magnet, you can easily leave the CA1246 mounted to a surface, completely hands-free, during the logging procedure. When you're done logging, connect the CA1246 via USB cable or Bluetooth wireless to a compatible PC or laptop to download data, ready for further analysis in Chauvin Arnoux's software. Additional features of this temperature and humidity meter include a built-in backlight, MIN/MAX mode, a data hold function and automatic power-off (configurable).