Defrost Control Board, VAC:18-30, Hertz:60/50, Power:1 Watt Max, Defrost Time:Fixed at 10 Minutes, Interval Between Defrost:30/60/90 Minutes, Reset Time: 500 MS, Mount:Surface Mount/Stand-Off (Screws Not Included), Features:Low Cost, Integrates Multiple Times, and Temperature Defrost, Dimensions:1"H X 3-1/2"W X 2-7/8"D, Weight:1.6 Ounces, In Blister Packaging, Made in USA.