choose the 1S, for checking your node lithium battery status US $2.35
for a quick indication it works fine, just push the button and some LED’s light up
if you don’t mind a few 'chinese buttons …
€ 42.59
- http://www.exp-tech.de/handheld-digital-spectrum-analyzer-rf-explorer-868m
- https://www.seeedstudio.com/RF-Explorer-868M-p-782.html
RF EXPLORER FAQ - http://j3.rf-explorer.com/articles-faq
It’s on sale right now, 25% off!
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looking forward to receive it, I’m curious
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US $2.68 incl. shipping
US $16.69 incl. shipping
US $12.60 incl. shipping
17,95, inner diameter is just suitable for a PPD42NS. Sharp GP2Y1010AU0F fits very easily.
https://www.weerstationkopen.nl/nieuwe-producten/98111402-tfa-sensorhut
perhaps nice to mention… I’m talking to those RIVM guys about hooking up ttn sensors to their project. Regarding the casings I’m pretty sure those sensor cases are really much better because yoghurt bins give very weird airflows.
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and I thought they were cheap for the price I spotted them… wonder what they cost for chinese members 
This is $11.05 but I bet half of that is shipping
Free shipping plastic outer shield for thermo hygro sensor, spare part for weather station (Transmitter / thermo hygro sensor)
I guess you’re right. On the other hand most initiatives are about deploying many of those sensors… https://nl.aliexpress.com/item/plastic-outer-shield-for-thermo-hygro-sensor-spare-part-for-weather-station-Transmitter-thermo-hygro-sensor/32498845208.html?scm=1007.13339.33317.0&pvid=ab1cc3b5-7ca6-4f76-8c86-9808633a036b&tpp=1
If you want many say 10 or more I recommend writing the to the seller on Aliexpress, almost always they can offer you something better than what you get just by going through the usual ordering process. It just takes a line or so and most are quick to reply.
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if you need arduino mega power (4 uarts) in a small package … nice product 
