UIB S Post Universal Ignitor Board Small with Post Connection - The board comes ready for use in Furnaces or a jumper on the board can be cut to make the board instant fire for use in Refrigerators or water heaters. 12Volt DC operation. Post for concenience (spark plug top). Superior Construction with plated and soldered through holes to virtually eliminate intermittent connections. 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. The 2-tab mounting kit allows you to mount a Dinosaur Electronic's UIB S or UIB S Post ignitor board in an Atwood®/Hydroflame water heater without having to drill a hole to mount the board and risk drilling a hole in the water tank. It comes with an aluminum adapter plate, a clear small cover to protect the UIB S or UIB S Post igntior board and mounting hardware. TEI Certified. Made in the USA Dimensions: 3.25 inch x 4.25 inch. 3-Year Warranty