The TSX Series ULT freezers  feature V-drive adaptive control technology, designed to minimize energy consumption without sacrificing sample security. While conventional ULT freezers use single-speed compressors that continually cycle on and off, the V-drive runs the compressors at variable speeds, adjusting cooling performance to the cooling demands inside and outside the freezer.

When conditions are stable, the V-drive controls the system at low speed, which helps reduce energy consumption while maintaining a stable temperature for sample protection. When there are frequent door openings or samples being added to the freezer, the system detects the activity and increases the drive speed

TSX Series ULT freezer. Available in four sizes, the smallest unit, the TSX40086 freezer shown here, can hold up to 400 boxes in a 7.42 sq. ft. footprint, while the largest unit, the TSX70086 freezer, can hold up to 700 boxes in an 11.86 sq. ft. footprint.