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LK220 is a dedicated control package published by THORLABS Inc. that enables full operation of the company’s LK220 Thermoelectric Liquid Chiller through an integrated Windows environment. The software combines a graphical user interface, low-level device drivers, and multi-language SDKs for LabVIEW, C++, and Python, giving researchers and OEM integrators a single installer that covers both interactive use and automated or embedded development. Typical use cases range from laser-cooling loops and spectroscopy temperature stabilization to semiconductor test fixtures and analytic instrument thermal management, where precise, low-noise liquid cooling is required. Because the package exposes the same API across LabVIEW VIs, C++ headers, and Python modules, teams can prototype in the GUI, transition to scripting for repetitive characterization, and finally embed the chiller control inside larger test sequencers without rewriting communication code. Version 1.0.3, the first public release, ships with 32- and 64-bit drivers signed for Windows 10/11, automatic device discovery over USB, real-time temperature and flow monitoring, configurable alarm limits, and data-logging export in CSV format for downstream analysis. The software is classified under Scientific / Laboratory Equipment control and is distributed as a single offline installer that includes all dependencies, allowing installation on air-gapped systems common in regulated labs. LK220 is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version and supporting batch installation of multiple applications.
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