The Universal Ignitor Board Large with Post Connection is of superior construction with plated and soldered through holes to virtually eliminate intermittent connections. 12Vp;t DC Operation. Tries 3 times to ignite gas, with appropriate purge cycles before going into lockout. Highly reliable microcontroller for accurate and stable operation. Diagnostic LED light helps diagnose problems! Green-You have power to the board and NC terminal. Red-You have power to the gas valve terminal. Fuse and surge protection via the replaceable 5 Amp automotive fuse protects the board from short circuits on the Valve and NC terminals. Removable jumper for instant fire operation in water heaters and refrigerators. TEI Certified. Dimensions: 3.43 inch x 5.10 inch. 3 Year Warranty.