
X-Sense STH51 Smart Thermometer/Hygrometer
- Ships today! The product is in stock at our warehouse located in Finland. Orders are shipped at lightning speed usually the same or next business day. Delivery time depends of the destination country.
- Ships in 4–7 days The product is shipped from supplier warehouse and delivered first to our warehouse located in Finland. You will receive a tracking link by email once we have shipped your order from our warehouse, usually within 4–7 business days after your order.
- Out of stock The product is currently unavailable. Please send a message to our customer service for more information.
Please take a look of our Shipping methods and costs page for more information.
Do you have any question?
We prefer that you send your message with our live chat. Contacting us with the chat allows us to see the product & page where you at the moment so it will be faster for us to check the product you are interested.
We can help you immediately if we are available, if we are busy packing orders we will get back to you and contact you by email & live chat.
If you are in a hurry you can leave your message with the contact form.
Would you like to place a larger wholesale order? Or would like to request for quotation for custom order?
Request for quatation:
- Add all the items and quantities into the cart
- Go to the "Cart page" by clicking this link or click the "Contact us" button in the slider cart.
- In the "Cart page" you can click the "Contact us" button and you can send a message and quote request for your cart items.

Description
Product information
X-Sense STH51 Smart Thermometer/Hygrometer
This smart thermometer and hygrometer is the ideal solution for those who want to accurately monitor the temperature and humidity in their home, office or specialized spaces such as terrariums, greenhouses or incubators. With precise measurements and remote monitoring capabilities, you'll always be up to date on your environmental conditions, no matter where you are. The device works with Amazon Alexa, allowing you to conveniently receive voice information about current room parameters.
Collaboration with Amazon Alexa
Integrate your device with Amazon Alexa's voice assistant to instantly receive information about humidity and temperature levels without having to look in the app. Just ask and Alexa will give you up-to-date data. This is a great convenience, especially when you're busy - you don't have to look for anything on your phone, which saves you time and enhances your user experience.
Export data in the cloud
With the free data export option, you can easily save measurements to the cloud and analyze them at any time. This is especially useful if you care about tracking temperature and humidity changes over the long term, such as in plant breeding or egg incubation. You no longer have to keep notes yourself or worry about losing data - everything is stored securely in the cloud.
Put it where you want it
Whether you're monitoring conditions in a terrarium, greenhouse or incubator, the device is compact enough to easily place anywhere.
Instant push notifications
As soon as the conditions in the monitored room deviate from the set norms, you will immediately receive a push notification on your phone. This ensures that you can always react quickly to unfavorable changes, thus avoiding potential losses - such as the loss of valuable plants or stored cigars.
High-end sensor
The precision Swiss sensor guarantees accurate temperature and humidity measurements, with an accuracy of 0.2°C and 2% relative humidity. It's ideal for demanding users who need reliable results in critical applications. The sensor operates over a wide temperature and humidity range, making it extremely versatile.
Compact design
The device is not only functional, but also aesthetically pleasing and compact. Its slim design makes it suitable for placement in even the smallest spaces, where it won't take up too much space, but will still do its job effectively.
Included
- Thermometer Hygrometer
- Lanyards
- Stickers
- AAA batteries
- User manual
| Manufacturer | X-Sensor |
|---|---|
| Model | STH51 |
| Power supply | 2 × AAA batteries (replaceable) |
| Voltage | 3 V DC |
| Battery capacity | 1200 mAh |
| Battery life | 1 year |
| Material | ABS |
| Alarm volume | No sound when the temperature or humidity exceeds the set level (the base station will sound and the app will send a notification). |
| Light indicator | Red/Blue |
| Operating temperature | -4-140°F (-20-60°C) |
| Humidity during operation | 0-100% RH |
| Temperature accuracy | -20-0°C: ±0.2-0.4°C; 0-60°C: ±0,2°C |
| Accuracy of humidity measurement | 10-90% RH: ±2% RH; Maximum: ±3.5% RH; 0-10% / 90-100% RH: ±2-3% RH; Maximum: ±3.5-5% RH |
Warranty: 60 months
X-Sense STH51 Smart Thermometer/Hygrometer
This smart thermometer and hygrometer is the ideal solution for those who want to accurately monitor the temperature and humidity in their home, office or specialized spaces such as terrariums, greenhouses or incubators. With precise measurements and remote monitoring capabilities, you'll always be up to date on your environmental conditions, no matter where you are. The device works with Amazon Alexa, allowing you to conveniently receive voice information about current room parameters.
Collaboration with Amazon Alexa
Integrate your device with Amazon Alexa's voice assistant to instantly receive information about humidity and temperature levels without having to look in the app. Just ask and Alexa will give you up-to-date data. This is a great convenience, especially when you're busy - you don't have to look for anything on your phone, which saves you time and enhances your user experience.
Export data in the cloud
With the free data export option, you can easily save measurements to the cloud and analyze them at any time. This is especially useful if you care about tracking temperature and humidity changes over the long term, such as in plant breeding or egg incubation. You no longer have to keep notes yourself or worry about losing data - everything is stored securely in the cloud.
Put it where you want it
Whether you're monitoring conditions in a terrarium, greenhouse or incubator, the device is compact enough to easily place anywhere.
Instant push notifications
As soon as the conditions in the monitored room deviate from the set norms, you will immediately receive a push notification on your phone. This ensures that you can always react quickly to unfavorable changes, thus avoiding potential losses - such as the loss of valuable plants or stored cigars.
High-end sensor
The precision Swiss sensor guarantees accurate temperature and humidity measurements, with an accuracy of 0.2°C and 2% relative humidity. It's ideal for demanding users who need reliable results in critical applications. The sensor operates over a wide temperature and humidity range, making it extremely versatile.
Compact design
The device is not only functional, but also aesthetically pleasing and compact. Its slim design makes it suitable for placement in even the smallest spaces, where it won't take up too much space, but will still do its job effectively.
Included
- Thermometer Hygrometer
- Lanyards
- Stickers
- AAA batteries
- User manual
| Manufacturer | X-Sensor |
|---|---|
| Model | STH51 |
| Power supply | 2 × AAA batteries (replaceable) |
| Voltage | 3 V DC |
| Battery capacity | 1200 mAh |
| Battery life | 1 year |
| Material | ABS |
| Alarm volume | No sound when the temperature or humidity exceeds the set level (the base station will sound and the app will send a notification). |
| Light indicator | Red/Blue |
| Operating temperature | -4-140°F (-20-60°C) |
| Humidity during operation | 0-100% RH |
| Temperature accuracy | -20-0°C: ±0.2-0.4°C; 0-60°C: ±0,2°C |
| Accuracy of humidity measurement | 10-90% RH: ±2% RH; Maximum: ±3.5% RH; 0-10% / 90-100% RH: ±2-3% RH; Maximum: ±3.5-5% RH |
Warranty: 60 months

































































































































































































