Stern Weber Treatment Centre Comparison S200S220S320TRS280TRcS380TRc Dentist's Module Full Touch Display Micromotor i-XR3L with f.o. (1,000 – 4,000 rpm) Micromotor i-XS4 with f.o. (100 – 40,000 rpm) Peristaltic pump module Sixth instrument X-ray viewer for panoramic x-rays (international units only) Integrated sensor Unit Body Glass cuspidor bowl Ceramic cuspidor bowl Cuspidor bowl drive system Cup water heater Spray heating Independent cannulae selection Suction stop device on chair base Multimedia applications wiring Transthoracic tray holder (international units only) Dentist’s module tray holder Assistant’s tray holder Venus light Venus Plus light Venus Plus-L LED light Patient Chair Atlaxis headrest Mobile, removable right armrest Left armrest Child’s cushion Pressure-operated foot control Pressure-operated foot control (wireless) Hygiene Systems Bioster S – available only with the LCD control panel Sanaspray S W.H.E. I.W.F.C. Automatic wash and disinfection for Suction system Standard Optional Not available