Raspberry Pi Zero WH
The Mesh Station 2024 Model C (MS24c) is Raspberry Pi Zero WH running the Raspberry Pi OS. Like other Mesh Stations they are ultra low cost, having only 512MByte of random access memory (RAM).
Raspberry Pi Zero WH measures only 65mm by 30mm, but has a lot of features.
source: micro robotics
As of September 2023, Raspberry Pi Zero WH should be available cheaply in reasonable quantity worldwide.
Zero W
A slightly LESS expensive version called "Raspberry Pi Zero W" is just a "Raspberry Pi Zero WH" but WITHOUT headers soldered on (thus the missing H at the end of the name).
The above image shows a Raspberry Pi Zero W next to a Raspberry Pi Zero WH, both mounted according to our novel Spacer Wall design.
Although headers are NOT required in most use cases, when given a choice it is best to pick the Zero WH, so the 40 expansion pins can be used to attach peripherals instantly.
Dimension
Raspberry Pi Zero W is light and small, besides the "standard" positioning on the window sill, it can be deployed almost anywhere e.g. stick on to the window glass with adhesive tape or throw into a backpack with a battery pack.
Wireless
Rpi0w only has a 2.4GHz wifi radio that is NOT capable of running as a mesh
Zero W uses a resonant cavity antenna design from Proant to reduce cost.
Raspberry Pi Foundation will not release the antenna pattern freely to the public (needs signing some documents), luckily Carl Turner has measured the antenna pattern and published it freely!
Note from the pattern that the radio signal on the header side is rather weak, which our Spacer Wall design takes full advantage of.