Lascar el usb lite low cost usb temperature data logger lascar el usb lite p the lascar el usb lite is a low cost usb temperature data logger with a measurement range of 10 deg c to 50 deg c 14 deg f to 122 deg f and a fixed sample rate of 30 minutes the data logger can store over 4 000 readings and is supplied with a coin cell battery which provides approximately 1 month s usage press the button and a red green led indicates whether a preset alarm level has been recorded p p the