This PrecisionBrew! digitally controlled coffee brewer from Grindmaster features one warmer under the brew basket and two warmers on top. This unit has a precise brew temperature feature ‐ the brewer will hold the brew temperature to within 1°F during the complete brew cycle. The brew volume can be set by "teach" mode to eliminate trial‐and‐error set‐up. Pulse brewing / pre‐infusion allows the brew sequence to extract up to 20% more dissolved solids per batch of coffee.