RF remotes generally work this way: The originating signal is sent from the remote as RF (radio frequency.) In the case of the MX-950 in my theater that's 418MHz, a very stable and reliable frequency band.
By nature, propane is clear and contains no scent at all. For safety purposes propane. companies add a substance known as ethyl-mercaptan to the propane fuel. Ethyl-. mercaptan has a strong rotten egg, or skunk-like scent, which allows the consumer to. smell it in the case of a leak.
1 prolonged exposure to the odor of propane; and. 2  musty or damp smells, such as in a basement. 3  The smell from a propane leak may not wake you when sleeping. 4  If you are concerned that you may not be able to smell a propane leak, contact your family doctor.