DWC24 has locking temperature set point. It is a Digitally Controlled Heating Chambers. It electrical consisit with 120V, 12 Amp., 50/60HZ. Heating range from 90 to 160 degrees F. Heat control skill to plus or minus 3 degrees F. The product compartment size with 17.2 cubic feet and 26W X 23D X 15.25H. Audible and visual over/under temp alarm. Completely Insulated U.L./C.U.L approved. It is FDA registered and OSHPD pre-approved. Rapid warm time i.e. 2-6 hours depending on load