The power regulator in model allows to ascertain the additional busine
ss hours: 
"heating from below" (lower heater was included in) - are applied to v
egetables drying, fruits, fungi with full preservation of gustatory an
d nutritive qualities; 
"heating on top" (top heater was included in) - for temperature mainte
nance of precooked dishes; 
" defrosting" (all heaters works in half the capacities) - provides th
e defrosting without "heat stroke", that repays product original fresh
ness.