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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
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Description
WSD400H WiFi Temperature Humidity Sensor Abnormal Alarm Real Time Monitor Compatible with Alexa / Google Assistant (No Battery)Real time Temperature and Humidity MonitoringView accurate temperature and humidity data in real time, ensuring optimal environmental conditions. Customizable AlertsSet upper and lower limits for temperature and humidity, receiving instant notifications when thresholds are exceeded. Smart Home IntegrationCompatible with Alexa and Google Assistant for seamless integration into your smart home ecosystem. Audible AlarmFeatures a built in alarm with sound
- 【Real-time Temperature and Humidity Monitoring】View accurate temperature and humidity data in real-time, ensuring optimal environmental conditions.
- 【Customizable Alerts】Set upper and lower limits for temperature and humidity, receiving instant notifications when thresholds are exceeded.
- 【Smart Home Integration】Compatible with Alexa and Google Assistant for seamless integration into your smart home ecosystem.
- 【Audible Alarm】Features a built-in alarm with sound levels exceeding 55dB/1M for clear, attention-grabbing alerts.
- 【App Connectivity】Receive push notifications through the Tuya app, allowing remote monitoring and control.
- 【Historical Data Access】Review past temperature and humidity records for trend analysis and long-term monitoring.
Specifications:
- USB input: DC5V
- Battery: DC3V LR03 AAA battery*2 (not included)
- Quiescent current: ≤75uA
- Alarm current: ≤135mA
- Low power undervoltage: ≤2.4V
- WiFi: 2.4GHz, 802.11 b/g/n
- Detection temperature: -10℃-60℃
- Detection humidity: 0-100%RH
- Alarm sound pressure: ≤55db/1m
- Installation method: wall-mounted/desktop placement
- Working temperature: -10℃-60℃
- Working humidity: ≤90%RH
Package included
- 1 x WiFi Temperature Humidity Sensor
- 1 x English and Chinese User Manual
Specifications
| Brand | N/A |
| Certificate | CE |
| Color | As Shown |
| Packaging Type | Colored Box |
| Plug Type (For Supply) | N/A |
| User Manual (Language) | English and Chinese |
| Gross Weight | 0.123kg |
| Volume Weight | 0.066kg |
| Package Length | 7.800cm |
| Package Width | 7.600cm |
| Package Height | 5.000cm |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 1
Very thin & no support
Size: Queen (U.S. Standard)
I was thinking these pillows were going to be kind of firm with the way they are described and the picture but they are very thin and when I laid down on it, it was like whatever is in the pillow just instantly moved to each side of my head. Definitely not for me and my neck issues.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Back sleeper here
Size: Standard
So since they were listed as down alternative, I was interested to see if they had that artificially puffy feel to them. They do get puffed up really well after a day. And the fabric is cool and comfortable. I do feel like these have good quality stuffing and the cover feels nice. I'm a back sleeper and it's just the right amount of bulk under my neck. I usually bunch the pillow up a little bit there so there's a little more pressure under my neck but with these it just felt good to lay on it without having to bunch it up in any special way. So I would definitely recommend them. So far I'm really liking having these pillows.
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Nice and Fluffy
Size: Standard
These "down alternative" pillows have been a winner for me. Came two to a package and once they have a couple of days our of the vacuum packaging are nice and fluffy with no noticable odor. Just the right amount of "spring" to them for my taste. Also don't overheat my face/neck as traditional down pillows sometimes have.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Hotel Grand Set of 2 pillows
Size: King
Excellent quality and comfort. The pillows are soft but with the perfect support, ideal for any sleeping position. They feel fresh thanks to the cotton cover and keep their shape very well. Without a doubt, a great purchase for a hotel-like break at home.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Highly recommend
Size: King
These pillows are super comfortable and feel just like hotel quality. They’re soft but still give great support for my neck and head. I’ve been sleeping much better since I got them.
They stay fluffy and don’t go flat, and the material feels nice and cool. Definitely a great purchase
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Reviewed in the United States on April 10, 2026