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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25
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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
4.1 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
It’s like a nice hug.
Size: Queen
I find this mattress pad very comfortable to sleep on. I originally bought it because my mattress was too hard. The mattress pad solved the problem. It’s nicely quilted making it very cushy. I’m very happy with it.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Fixed my aches, real improvement in sleep
Size: Queen
It actually does make my bed feel better.
I was skeptical, but decided to try it because our mattress isnt very old but I wake up with aches in my hips/lower back. When I got it, I thought no way this works. But it does.
It goes in like a fitted sheet, super easy to put on. And I honestly havent woken up with hip or lower back aches since using it. Had it on our bed for about 2 months now.
I read some people say they sleep hotter with it, but I havent noticed that at all. Temperature feels the same as without it.
So glad I tried this before spending money on a mew mattress!
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Best Mattress Pad!
Size: Queen
This is the best mattress pad you are going to find anywhere and the price is actually a bargain compared to all the other mattress pads I saw in the stores or online. Thought I needed a new mattress but all I needed was this comfy cover.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Soft, comfortable and really nice.
Size: Full
This product is of really nice material. It's soft and comfortable, deep pockets and fits my bed perfectly. It's a great product, however, if you're looking for something for back support, this isn't it. It isn't for me anyway - there's no firmness to this topper at all but it is very comfortable.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
COMFORTABLE AND WORTH THE MONEY
Size: Queen
Excellent mattress topper. Its thick and paired with my matress provides a high end hotel feel. I have had it for a few months and it has not lost its shape and stays in place. Worth the money. You are definitely getting what you paid for.
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Reviewed in the United States on May 26, 2026