Remote Sensor Bleg

(sadly, there is no forum for this.  hope this will do)

I need to wire up two different crawlspaces with sensors for temperature and humidity, and I need some sort of remote so I don't have to crawl in there to see a set of steam gauges!  Why?  because I need to modernize their insulation, converting a vented crawlspace to an insulated and sealed one - and the real danger is humidity finding its way up through the vapor barrier.  I'd rather get some reads on what's happening then discover a boat load of moldy timber down there.

But I need your experience to help me make a selection.  There are so many options - wired vs wifi vs bluetooth, phone vs datacard vs website, package vs diy, brand-x vs brand -y - I'm not quite sure where to start.  I can certainly throw some $ and see what happens in the technology casino, but maybe folks here can nudge me in one direction or another.

There are some existing solutions such as:

$139 Tempstick : https://www.meross.com/product/51/article/{/list]
[list]$22 Meross sensor: https://www.meross.com/product/51/article/

$19 Switchbot: https://www.switch-bot.com/products/switchbot-meter

And of course there are arduino and raspberry pi options ... which are really appealing except there is a learning curve there that I'm not sure I need/want to deal with at this moment.  But I could be convinced.

any thoughts? experiences to share?  Thanks.

If you can place the display close to the probe, wired is probably the best option. No batteries to swap.

Wifi uses a lot of power, so not an option for battery powered devices.

Bluetooth is usable, Bluetooth low energy is better.

Forget GSM based things, unless you want to read the values when not at home.

---

I remember that the ZigBee protocol is designed for this.
https://www.itead.cc/sonoff-snzb-02-zigbee-temperature-and-humidity-sensor.html + https://www.itead.cc/sonoff-zbbridge.html

Thanks for the Zigbee reference!  Going down that hole now...

I’ve used the tempstick and have found it extremely reliable. Installed over a year ago with bi-daily readings that output to a spreadsheet and the battery still shows at 100%. Alerts for high/low temp/rh sent to your phone and/or email.

James, thanks for sharing that experience.  It certainly is one of the more expensive options, but as an out-of-the-box solution that seems to be working well it deserves consideration.