RC Remote Controlled AUX on/Off Electronic Switch Relay

Not sold here. This is gear we use and recommend, not a TMRC product — get it on Amazon: https://amzn.to/49ZH2Tk
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This is used to wire lights/pumps to auxiliary channels, which lets you turn them on and off from the radio.

get your here --->https://amzn.to/49ZH2Tk