The PV-KLA photovoltaic I-V curve analyser is a versatile measuring system for recording the current-voltage characteristic of photovoltaic modules and cells in both research and industrial settings. It is flexible enough for both indoor and outdoor use. Several of these devices can be found in the quality assurance departments of German and international photovoltaic module manufacturers, as well as in research institutes. Direct control of the device via a USB interface and the PVK software ensure reliable and convenient operation.