DIY remote switch

[Capt Bob]

The switch I linked has a built in relay and works as-is.

Sorry Kyle, I meant that the RTU-5054 requires a relay.

As Andy says in his SA article, the RTU-5014 is less expensive because it does not have a relay, and only works with a GSM network. There is also more DIY effort involved, but Jass said in his original post that he is looking for less expensive. At about $30 all in the RTU-5024 is just about the least expensive way to go, so you pays your money and takes your choice. You will have to buy a phone plan for your remote switch regardless if it is GSM only, or is able to use 4G/5G.

Bob