Compatibility: Works with all Ambient Millivolt Remote Transmitters with 4 Dip Switches This 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 (B00470V9N6) and MRCK-TH (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 Only Replacement for RCM-RX / RMC RX receiver Receiver 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 receiver Two prong wire Black face plate kit White face plate kit 4 AA Batteries