Some of these have a body cover that just unscrews off, and expose a set of rotary channel and group selector that you can turn with a small flat screw driver. Match to the new numbers letters on the receiver. If it is the LED type you just need to hold the ch or grp button down until the display flashes then just toggle through the codes.
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Some of these have a body cover that just unscrews off, and expose a set of rotary channel and group selector that you can turn with a small flat screw driver. Match to the new numbers letters on the receiver. If it is the LED type you just need to hold the ch or grp button down until the display flashes then just toggle through the codes.