This H P Labortechnik Variomag Telemodul 40-S Control Stirrer Module is in great condition and was removed from a working environment. This unit came from a local lab that had surplus lightly used equipment. We urge customers to view all photos as they show overall condition, included accessories, and useful information. Although we do not have the means for full testing, we are offering a 30-day full money back guarantee return policy on this unit. Please feel free to contact us with any questions. H + P Variomag Telemodul 40 S For controlling magnetic stirrers. Connection module for 4 single or 2 multi-position stirrers. Stirring and shaking function. Interval or normal operation. Parameter setting via rotary knobs. Digital display. 115 V 50/60 Hz Maximum RPM: 850