DLP-TH1b *LEAD-FREE* USB-Based Temperature & Humidity Sensor The DLP-TH1 is a USB-based digital temperature and humidity sensor. Software provided with the DLP-TH1 sensor displays temperature, humidity, and dew-point data in both Fahrenheit and Celsius, plots graphically to the screen, and logs to a data file on the hard drive. The software will also send an email to user-specified recipients if the temperature or humidity exceeds specified setpoints. The DLP-TH1 sensor uses a fully calibrated capacitive polymer-sensing element for relative humidity and a bandgap temperature sensor providing excellent long-term stability. Calibration coefficients for the sensors are permanently stored in digital memory within the DLP-TH1 module so that the module is fully interchangeable with any other DLP-TH1 module. The most recent versions of the application software for the DLP-TH1 are available as a free download from www.dlpdesign.com/usb/th1.shtml. No external power source is required--all power (30mA max 5V) is taken from the USB port via the provided 6-foot USB cable. 1 QUICK-START GUIDE This guide requires the use of a Windows 2000/XP/VISTA PC that is equipped with at least one available USB 1.1- or 2.0-compatible port. 1. If the DLP-TH1 sensor is connected to your PC, disconnect it at this time. 2. Download the USB drivers from the bottom of the page at www.dlpdesign.com. Unzip and save these driver files to a folder on your hard drive. 3. Download the DLP-TH1 Windows software from www.dlpdesign.com/usb/th1.shtml. 4. Connect the DLP-TH1 sensor to your PC via the provided USB cable. This action initiates the loading of the USB drivers. When prompted, select the folder specified in step 2 above. Windows will then complete the installation of the device drivers for the DLP-TH1. The next time the DLP-TH1 module is attached, the PC will immediately load the correct drivers without any prompting. Reboot the PC if prompted to do so. At this point, the DLP-TH1 is ready for use. Run the application program software acquired in step 2 above and Open the sensor module to start acquiring temperature and humidity data. SPECIFICATIONS Temperature C F Range 0 to 100C 32 to 212F Accuracy 2.0C (-30 to 80C) 3.6F (-22F to 176F) Resolution 0.01C 0.02F Repeatability 0.1C 0.2F Response Time 5-30 Sec. 5-30 Sec. Humidity Range 0-100%RH Accuracy 3%RH (20 to 80%RH), 5%RH (0 to 100%RH) Resolution 0.03%RH Repeatability 0.1%RH Response Time 4 Sec. 2