Easy to install,just connect the 2 lead together to bypass it,this replacement kit will allow you to enjoy your space without worrying about your safety. Effectively prevent fire hazards caused by overheating or dumping of the burner. Made of quality ABS plastic and high-standard copper,durable. For safety,if the furnace head temperature is too high or the furnace head tilts more than 30 degrees,the furnace head will automatically turn off. Suitable for propane gas heaters with thermoelectric safety,such as room gas heater,outdoor patio heater and other thermoelectric gas products., Weight: 0.1984160358 Pounds, Manufacturer: N\A