- Release Date
- Specifications
- Buy It
- News
- HOW TO USE
- HA Interface
- Technical documentation
- FAQ
- Is the probe head water proof? Could I use this in a misting chamber where at times the sensor head could be saturated?
ESPHome Temperature and Humidity Sensor THS45 Coming Soon. Based on the SHT45, one of the most accurate temperature and humidity sensors available today, featuring exceptional precision and a brand-new probe design optimized for air measurement.
We've manufactured numerous THS1 units based on the SHT40. Now we plan to create an advanced version utilizing the SHT45 sensor paired with new probe technology. This time, the sensor is encapsulated in a rigid resin and left fully exposed to prevent interference from any medium. This approach yields a robust sensor unaffected by ESP32 heat dissipation, delivering truly remarkable precision.
For enthusiasts seeking ultra-high-precision online temperature and humidity sensors, this could be an exciting adventure!
Below is a brief introduction to the SHT module from Adafruit:
Sensirion Temperature/Humidity sensors are some of the finest & highest-accuracy devices you can get. And finally, we have some that have a true I2C interface for easy reading. The SHT40, SHT41, and SHT45 sensors are the fourth generation (started at the SHT10 and worked its way up to the top!).
- The SHT40 has an excellent ±1.8% typical relative humidity accuracy from 25 to 75% and ±0.2 °C typical accuracy from 0 to 75 °C.
- The SHT41 has an excellent ±1.8% typical relative humidity accuracy from 25 to 75% and ±0.2 °C typical accuracy from 0 to 75 °C.
- The SHT45 has an even more excellent ±1% typical relative humidity accuracy from 25 to 75% and ±0.1 °C typical accuracy from 0 to 75 °C.
Note that compared to the SHT40, the SHT41 has the same typical accuracy of ±1.8% RH from 25-75% but has much better accuracy over the full humidity range, with a typical accuracy of ±2% over the 0-100% RH range, whereas the SHT40 has a worst-case typical accuracy of ±3%. Also, the SHT41 max accuracy is ±3% where as the SHT40 has a max accuracy of ±6%. So basically, you'll get better accuracy for not-much-more cost. If you need the 'best' of the SHT4x series, you want the SHT45.
Release Date
9 January 2026 Published.
Specifications
Parameter | Value | Notes |
Sensor Dimensions | 30 mm × 24 mm × 13.9 mm | |
Probe Cable Length | 1 m | |
Power Supply | USB-C, 5 V | |
Communication | Wi-Fi | |
Temperature Accuracy | ±0.1 °C (typ.), ±0.2 °C (max) | SHT45 |
Humidity Accuracy | ±1.0 %RH (typ.), ±1.8 %RH (max) | SHT45 |
Buy It
https://shop.screek.io/products/ths45
News
Title | Date |
|---|---|
Jan 12, 2026 11:07 AM | |
Jan 9, 2026 11:44 AM | |
Jan 3, 2026 12:51 AM |
HOW TO USE
- Power on the device.
- Connect to the hotspot SCREEK-THS45 using your phone or computer.
- If the setup page does not open, open a browser and go to:
- Select the same 2.4 GHz Wi-Fi network used by your Home Assistant and enter the password.
- After connecting to Wi-Fi, the device will be automatically discovered by Home Assistant.
The device will create a Wi-Fi hotspot named SCREEK-THS45.
A setup page should open automatically.
That’s it. Your device is now ready to use.
HA Interface
Technical documentation
FAQ
Is the probe head water proof? Could I use this in a misting chamber where at times the sensor head could be saturated?
question from reddit_give_me_virus
It may be extremely non-waterproof since protective measures for the chip itself have been eliminated. In contrast, the Sht40 probe we used earlier (THS1 sensor) featured rigorous safeguards, though at the cost of some responsiveness. As part of our exploration process, we'll observe its performance alongside early adopters. It must be acknowledged that this approach to chip handling renders it fragile and requires careful handling.