Low wattage warmers with four power levels - low, medium, high and chafer preheat; Touch controls; LED indicator lights on the control panel and glass top; Tempered black ceramic glass top is strong, non-porous and easy to clean; Safety features include overheat protection, small-article detection, pan auto-detection, empty-pan shut-off; Connect up to three warmers with the included interconnect cords (the centre warmer must connect to the electrical outlet); Up to five warmers (at maximum power) can be connected to a 15 amp circuit; Storage compartment under warmer conveniently holds cords when not in use; Drop-In warmer can be installed overhanging countertop or countersunk