Super flat; powerful magnetic stirrer for volumes from 100ml up to 40L; with long-range; magnetic field for stirring over long distances up to max. 40mm; ideal for thick-walled; glass vessels; round bottom flasks or double-walled containers; wash- and abrasion-resistant; stainless steel housing; speed range 100rpm to 2000rpm with feedback control; quick stop within 2 sec.; 4-step stirring power adjustment (5W / 10W / 15W / 20W); digital speed display; bi-directional RS232 interface allowing up to 14 units to be directly and individually controlled by the user's PC and 24V d.c. output; a.c. adapter for 100 - 240V. Ambient operating temperature: -10 to +40°C. Protection class: IP 22.