Guru
Joined: 20/06/2011
Location: AustraliaPosts: 2981
| Posted: 08:10pm 20 Aug 2023 |
Hi Derek,
Further on what Andy said, use a pair of HC-12 modules. These are ver simple devices, fed by a serial line and transmitted on 433MHz. The receiver sends on the serial line they are bi directional
Beware there are a lot of clones out there of dubious quality, Grogster on this board buys direct from the manufacturer so you will get genuine if you get them from him.
Regards,
Mick