This anti-tip protection device is suitable for the replacement of parts of most gas heaters. CE & CSA Approved Unit Gas Patio Heater Safety Kit, New Propane Gas Patio Heater Repair Replacement Parts Thermocoupler and Tilt Safety Switch Control For safety, if the heater tips or falls over, this device will automatically shut your heater off New manual style anti tilt switch 15A switch weak Current Dump switch for Propane Gas Heaters Minivolt Current Model for Gas Only with 4.8mm terminals This model is suitable for room gas heater, outdoor patio heater and other Thermoelectric gas products CE & CSA Approved Unit ,Weak Current Tilt Safety Switch for gas R≤10 mΩ Thermocouple wire total 350mm M8*1 Ends Special Design for Gas heaters Outdoor heaters Gold plated connectors inside. Suitable for Propane gas heaters with Thermoelectric Safety Can be used in Garden Treasures heater model 0574422 sold at Lowes in 2014/2015. Will fit Home Depot models: HSS-A-SS, HSS-A-GH, GS4400BK, GS4400GD, GS4400SS Following and Pay Attention on Below Assembly Tips: Thermocouple and tilt switch defect is just one reason, it cannot solve all defect problem of your heater. So firstly you have to exclude other possibilities of the defect and if need to replace the part above then choose this. Sometime the gas valve need to be replaced as well. Make sure the thermocoupler is well connected with the dump switch. Make sure the thermocouple head is already in right position and heated by the flame all ways ( if cannot heated by flame sometimes, thermocoupler easy shut off and fire goes out. Hold your valve and let it lit for 5-30 seconds then release your hands. Or it may not heated with enough time and fire goes out after heat for a while during your holding.