Amazon · Aug 21, 2026
$34 $34
free shipping w/ Prime
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Update: The price has changed to $33.99 since this was originally published.
Handy for monitoring humidity in a room where you're growing plants, storing wine, or keeping an instrument, since it sends alerts to your phone if levels drift out of range. It's only $2 off the list price right now, so this isn't a deep discount, just a modest markdown on a useful smart sensor. Buy Now at Amazon
Features
- WiFi and Bluetooth real-time remote monitoring
- Swiss-made sensor for fast, high-precision readings
- Instant app alerts for out-of-range environmental levels
- 20 days online storage with 2-year data export
- Versatile placement with included lanyard loop
Amazon · Aug 17, 2026
$34 $40
free shipping w/ Prime
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Handy for keeping tabs on temperature and humidity across a few rooms at once, whether that's a nursery, a wine fridge, or a grow tent, since each sensor logs data independently to the app via Bluetooth. Amazon has the 3-pack for $34, about $6 off the $40 list price. Buy Now at Amazon
Features
- Real-time app monitoring via Bluetooth
- Swiss-made sensor with ±0.54°F accuracy
- Two years of exportable data history
- Instant alerts for out-of-range environmental levels
- Compact design with convenient hanging hole
Amazon · Aug 17, 2026
$34 $40
free shipping w/ Prime
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Tracking temperature and humidity in a wine cellar, humidor, or multiple rooms at once gets easier with three sensors that sync to one app, and at $34 for the pack, that's $6 off the $40 list price. Buy Now at Amazon
Features
- Real-time app monitoring via Bluetooth
- Swiss-made sensor with ±0.54°F accuracy
- Two years of exportable data history
- Instant alerts for out-of-range environmental levels
- Compact design with convenient hanging hole
Amazon · Aug 27, 2026
$75 $90
free shipping
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Tracking temperature and humidity in two rooms, a greenhouse, or a wine fridge gets simpler with this pair, since both sensors sync to your phone via WiFi for remote monitoring. The two-pack runs $75, about $15 off the $90 list price. Buy Now at Amazon
Features
- Real-time remote monitoring via Wi-Fi and Bluetooth
- Swiss-made sensor for precise temperature and humidity readings
- Instant app alerts for out-of-range environmental conditions
- Clear electronic ink screen with long battery life
- Free 13-day data graphing and 2-year data export