Laboratory personnel with the need to store vaccines, pharmaceuticals and other molecular or biological samples safely can benefit from this new series of lab-grade undercounter refrigerators that are designed to minimize energy usage and noise, while maintaining high levels of performance and maximizing storage capacity. As the only current lab-grade undercounter refrigerators using thermoelectric devices in place of compressor technology for variable speed control, these refrigerators regulate their internal temperatures more effectively to provide ideal storage conditions for the most demanding applications. Powered by compressor-free V-Drive technology, featuring synchronized temperature management (STeM), internal conditions are actively monitored and maintained at the desired temperature. This includes constant monitoring of, and adjustments during, door-openings to minimize the negative impact of temperature fluctuations on samples. In combination, V-Drive and STeM provide uninterrupted temperature stability and uniformity throughout the internal chamber. Furthermore, the new TSX505 refrigerators consume up to 37 percent less energy than other models, translating to an average annual cost reduction of up to 30 percent.