Low wattage warmers with four power levels - low, medium, high and chafer preheat Touch controls LED indicator lights on 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 standard size warmers or four 1/1 GN warmers 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 Warranty 1 year back to base parts and labour