Hot plate made of Silumin (aluminium alloys) with ceramic coating. Plate diameter: 145 mm. Extra safety control circuit and hot plate cut-out via two independent temperature sensors. An independent safety circuit switches off the heating if a prefixed temperature difference (∆T) above set temperature is reached. No unintentional temperature setting. Speed range: 30 â€“ 1,400 rpm. Superior speed accuracy: Â± 1%. Digital display for speed and temperature (both, nominal and actual). Hot plate temperature range: 20 â€“ 300Â°C. 800 watt heating power (600 W at 115/100 V).