Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si [Point]:The Fan Control board should not be used with DuoTherm 900 Series furnaces that have the thermostat in a grounded circuit or any other furnace that has the thermostat in a grounded circuit. The "Fan Control" function must be used for the board to operate properly. [Performance]:If the fan control ignition panel fails to sense a flame after the third ignition attempt then the fan motor is turned off. Thus, you can reduce battery consumption and eliminate unnecessary blowing of cold air, your device provides better efficiency. [Applicable]:Compatible with for //Hydroflame's fan-controlled ignition boards [Note]:The FAN 50 Plus Pins for 12 only. Colour:Photo Color Material:Metal Package Contents: 1 x electronics ignitor board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.