Check the listing for details. 0.584.221 SIT Receiver Proflame 1 Remote Systems use with 0.584.022 / 0.584.023. Color: Black, Condition: New. Listed at 94.65 USD. New Style OEM Sit Receiver with Slide out Battery Tray. SIT Controls Proflame 0.584.221 Receiver is an auto programming model receiver for the GTM and GTMF Proflame Series remotes used by many fireplace manufacturers.This 0.584.221 receiver allows the following fireplace accessories to be controlled.Manual On Off FunctionRoom Thermostat Temperature Controlled On Off FunctionManual Modulating Flame Heights 6 LevelsAutomatic Manual Modulating Flame Heights "Smart Sense"Fan Speed Control 6 Levels when used with the SIT Fan Control ModuleThe 0584221 SIT Receiver was used on many of the fireplace and gas logs systems used by many fireplace manufacturers, including Regency, Travis Industries, Hearthstone, Empire, FMI, Lennox, Desa, Cozy Heat, Monessen and many others.Before replacing your current receiver, make sure to inspect the contacts and springs inside the 0.584.221 Proflame receiver and install new alkaline batteries.