Compatibility:Works with all Ambient Millivolt Remote Transmitters with 4 Dip SwitchesThis unit is compatible with MOST 7 and 8 dip switch remotes. We have found there are some 7/8 Dip switch remotes that are incompatible with the new receivers. If this receiver cannot be paired with your remote a new remote transmitter will also need to be purchased. WARNING This receiver comes with a new wiring harness, the older style wire harness will need to be replaced when installing this unit. NOT A REPLACEMENT FOR RC-RX or RCMHL-RX RECEIVERS THIS IS NOT COMPATIBLE with RCBHC or RCMHL Remotes. The Skytech MRCK (ASIN B00470V9N6) and MRCK-TH (ASIN B009LNP3YA) are complete remote and receiver packages that will work as a replacement for these items.NOT A REPLACEMENT FOR Skytech, Empire, Acumen, or other brand remotes.Standard Features:Remote Receiver and Wire Harness OnlyReplacement for RCM-RX / RMC RX receiverReceiver for RCT, RCM, RCMT, RCT, RCST, RCB, TLM, TLT, WWTD, and WMTD transmitters only. Handheld Remote transmitter not included.Ambient Technologies replacement receiver for fireplaces and gas logs.Includes:Remote receiverTwo prong wireBlack face plate kitWhite face plate kit4 AA BatteriesThis unit has 4 dip switches for syncing with the remote transmitter. Instructions are provided on how to set transmitters with 7 and 8 dip switches.