This is a Vision Fitness T-9450 HRT Power Switch. Part Number: 003326-00. Fits the following models: 1.0AT - TM319 - 2008, 13.0AT - TM333 - 2008, 18.0AXT - EP212 - 2009, 18.1AXT - EP258 - 2012, 2.0AT - TM329 - 2008, 3.0AT - TM330 - 2008, 3.1AE - EP552 - 2012, 3.1AT - TM459 - 2012 (After SN TM4261208BC00001), 3.1AT - TM459 - 2012 (Before SN TM4261208BC00001), 4.0AE - EP187 - 2008-2009, 4.0AT - TM331 - 2008, 4.1AE - EP553 - 2012, 5.0AE - EP209 - 2009, 5.0AT - TM332 - 2008, 5.1AT - TM427 (After SN TM4271208BC00001), 5.1AT - TM427 - 2012 (Before SN TM4271208BC00001), 7.1AT - TM428 - 2012, AFG 3.3AE - EP558E - 2014, AFG 5.3AE - EP559E - 2014, AFG, 7.3AE - EP572C - 2014, LS10.0E - EP542 Traditional - 2011, T8900S - 1998-2000, T9000 - 2002-2004 (TM78), T9100 - 2002-2004 (TM70), T9200 - 2002-2003 - Grey (TM49), T9200 - 2004 - Grey (TM49C), T9250 (TM244), T9250 - 2002-2003 - Grey (TM43), T9250 - 2004 - Grey (TM43C), T9250 - 2005 - Grey (TM43E), T9250 - 2005 - Grey (TM43F), T9250 - 2007 Deluxe - Grey (TM244 or TC174W), T9300 - 2002-2003 - Grey (TM55), T9300 - 2002-2003 - Grey (TM55C), T9350 - 2002-2003 - Grey (T42), T9350 - 2004 - Grey (TM42C), T9350HRT - 2005 - Grey (TM42E), T9400HRT - 2002-2003 - Grey (TM56), T9450HRT - 2002-2003 - Grey (TM47), T9450HRT - 2004 - Grey (TM47C), T9450HRT - 2005 - Grey (TM47E), T9450HRT - 2005 - Grey (TM47F), T9500HRT - 2002-2003 - Grey (TM54), T9500HRT - 2004 - Grey (TM54C), T9500HRT - 2004 - Grey (TM54D), T9600HRT - 2002-2003 - Grey (TM53), T9600HRT - 2004 - Grey (TM53D), T9700HRT - 2002-2003 - Grey (TM51), T9700HRT - 2004 - Grey (TM51D), T9700HRT - 2006 - Grey (TM184 & TC184B), T9700HRT - 2007 - Grey (TM243 & TC184W), T9700S - 2002-2003 - Grey (TM52), T9700S - 2004 - Grey (TM52C), T9700S - 2006 - Grey (TM183 & TC183CB), T9700S - 2007 - Grey (TM243 & TC183W), TM10, TM29) (Treadmill - Folding), Touch - T40 (TM433 & TM437), Touch - T40 - After 02-01-2014 (TM433 & TM437).