Interface module for the Maxwell MX-25 501 digital multimeters has been released. This is a Python module for easy data acquisition from Maxwell MX-25 501 digital multimeters. You can read the currently displayed value with very little effort. Example: from maxwell import Maxwell multimeter=Maxwell('/dev/ttyS0') value,unit=multimeter.read() print '%r %r'%(value,unit) See maxwell.py for instructions about the required multimeter setup (how to enable serial communication). Download from: http://python.cx.hu/maxwell/ NOTE: I don't have such a device anymore, just releasing my old code under the LGPL licence.