Here is a project that is using the TL-MR3020 (which is very similar to the 703N) using solar/wind power + rechargeable battery to build environment tracking st

Here is a project that is using the TL-MR3020 (which is very similar to the 703N) using solar/wind power + rechargeable battery to build environment tracking stations: https://apollo.open-resource.org/lab:argus https://apollo.open-resource.org/lab:argus