★★★★★ 5
Very cold
Color: 01 - Light Grey
Super cold
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Reviewed in the United States on February 25, 2026
Adafruit Si7021 Temperature & Humidity Sensor Breakout Board - STEMMA QT
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Adafruit Si7021 Temperature & Humidity Sensor Breakout Board - STEMMA QTIt's summer and you're sweating and your hair's all frizzy and all you really want to know is why the weatherman said this morning that today's relative humidity would max out at a perfectly reasonable 42% when it feels more like 77%. Enter the Si7021 Temperature + Humidity Sensor the best way to prove the weatherman wrong! This lovely sensor for Silicon labs has 3% relative humidity measurements with a range of 080% RH, and 0. 4 C temperature
Quick Dispatch:
Your Adafruit Si7021 Temperature & Humidity Sensor Breakout Board - STEMMA QT orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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You'll receive a tracking link by email once your Adafruit Si7021 Temperature & Humidity Sensor Breakout Board - STEMMA QT ships.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.3 ★★★★★
Based on 2414 reviews
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Product Reviews
★★★★★ 5
Cool pillow vase
Color: 01 - Light Grey
Nice cool material and stays kn the pillow well due to the snaps.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
★★★★★ 3
Ugly
Color: 01 - Light Grey
The light blue color looks like a hospital gown. Keeps cool but I don't think I can bear looking at it.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Cooling pillowcase
Color: 01 - Light Grey
These cooling pillowcases are fabulous. I just have one complaint they snap at the end instead of having a zipper, which could be uncomfortable if you’re laying on that snap. Also, it’s very hard to unfasten.
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Reviewed in the United States on December 5, 2025
★★★★★ 5
Comfy and cooling pillow cases for sleeping
Color: 01 - Light Grey, Color: 01 - Light Grey
Cooling cover for my pillow, great quality and super soft. Helps with my sleep. Have eye mask as a gift too. Highly recommended.
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Reviewed in the United States on December 28, 2025
