TreadLife Fitness Magnetic Treadmill Key Compatible with Horizon Treadmills using PART #082397. OEM Retail: $34.99. WORKS ON THESE MODELS: Horizon Part Number: 082397. Fits the following models: 1.0AT - TM319 - 2008, Club Series - CSE4.6 - 2007 (EP134B), Club Series - CST3.6 - 2007 (TM208), Club Series - CST4.6 - 2007 (TM209), Elite Series - 2.3T - 2007 (TM230), Elite Series - 3.3T - 2007 (TM231), Elite Series - 5.3T - 2007 (TM233), Elite Series - T4 - 2007 (TM264), Elite Series - T6 - 2007 (TM250), Freespirit - 30519 - 2007 (TM265), Freespirit - 30727 - 2008 (TM294B), Goal Series - GS1035T - 2008 (TM302), Goal Series - GS1050T - 2010 (TM627), Horizon - RCT7.6 - 2007 (TM237), Horizon - RST5.6 - 2007 (TM212), Horizon - T7.6 - 2011 (TM654), Horizon Club - T500 - 2008-2009 (TM307), Horizon Club - T700 - 2008 (TM306), Horizon Club - T800 - 2008 - Cranberry (TM306B), Horizon Club - T800 - 2008 - Slate Blue (TM306D), Horizon Club - T800 - 2008 - Spring Green (TM306C), Horizon Club - T800 - 2008 - Terra Cotta (TM306E), Horizon Club - T800 - 2008 - White (TM306F), Horizon Performance - T1200 - 2008 (TM318), Horizon Performance - T900 - 2008 (TM308), Horizon Series - CT5.0 - 2009 (TM602B), Horizon Series - CT7.0 - 2006 (TM608B), Horizon Series - CT81 - 2008 (TM297B), Horizon Series - CT83 - 2008 (TM298B), Horizon Series - T73 - 2007 (TM211), Horizon Series - T74 - 2007 (TM252), Horizon Series - T81 - 2008 (TM297), Horizon Series - T82 - 2008 (TM300), Horizon Series - T83 - 2008 (TM298), Horizon Series - T84 - 2008 (TM299), Horizon Series - T91 - 2009 (TM602), Horizon Series - T92 - 2009 (TM607), Horizon Series - T93 - 2009 (TM608), Limited Series - LS760T - 2008 (TM301), Limited Series - LS780T - 2009 (TM606), Limited Series - LS925T - 2007 (TM210), T800 2008 Cranberry - TM306B - Rev. 1.2, T800 2008 Slate Blue - TM306D - Rev. 1.2.