If you have purchased multiple neon signs and want to control the neon sign separately, you can follow the steps to match Code for the remote control and the dimmer.Note：Firstly disconnect the power of the two neon lights, and then start the code matching of the each neon sign separately. After each group of code matching is completed, disconnect the power supply of the finished one, and then proceed to the next neon sign.The code matching is as follows:1. Connect the neon sign to the dimmer and power supply.2. Disconnect the dimmer from the power supply, and then reconnect it.3. Press and hold the "SPEED-" and "SPEED+" buttons on the remote control at the same time within five seconds after step 2, and the neon sign will flash, indicating that the code matching is completed.