Xiaomi Smart Temperature & Humidity Monitor 3 Mini Review
Xiaomi Smart Temperature and Humidity Monitor 3 Mini: A Tiny Smart Home Essential
Xiaomi‘s commitment to smart home innovation continues with the exciting release of the Smart Temperature and Humidity Monitor 3 Mini. This compact device, recently unveiled on Xiaomi’s global website, promises high-precision monitoring and effortless smart home integration. This article will explore its features, benefits, and why it’s a worthwhile addition to any home seeking enhanced comfort and environmental control.

A Compact Powerhouse for Your Home Environment
The Smart Temperature and Humidity Monitor 3 Mini boasts a truly miniature design. Measuring a mere 53 × 45.3 × 13 mm and weighing only 30 grams, it’s significantly smaller and lighter than its predecessor. This diminutive size doesn’t compromise functionality; its 2.1-inch display, framed by a slim 5.1 mm bezel, provides a clear and easily readable view of temperature and humidity levels. The heart of this device is a high-precision Swiss Sensirion sensor, capable of detecting temperature changes as small as 0.1°C and humidity fluctuations of 1% RH, refreshing data every 6 seconds. These precise readings ensure you always have an accurate picture of your home’s climate. The display also features charming facial icons indicating comfort levels, making it easy to understand at a glance if adjustments are needed. Xiaomi recommends maintaining indoor conditions between 19–27°C and 20–85% RH for optimal comfort.
Smart Features for a Seamlessly Connected Home
The Xiaomi Smart Temperature and Humidity Monitor 3 Mini isn’t just a simple display; it’s a key component of your smart home ecosystem. Connecting to the Xiaomi Home app via a Bluetooth Mesh gateway (sold separately), it unlocks powerful automation capabilities. Set custom thresholds for temperature and humidity, triggering automated responses from other smart devices like fans, air conditioners, or humidifiers. A dry room? The monitor automatically activates your humidifier. Voice control via Xiaomi’s Xiao AI assistant provides hands-free access to real-time data. The device also boasts impressive data logging capabilities, storing 3 months of data locally and 6 months in the cloud, allowing you to track environmental trends over time through detailed graphs within the app. For optimized battery life, choose between standard mode (updates every 1–5 minutes) or save battery mode (updates every 3–13 minutes).
Versatile Placement and Long-Lasting Battery
Constructed from durable, odorless ABS plastic, the Monitor 3 Mini is built to withstand daily use. While not waterproof, its versatile design allows for flexible placement. Use the included stand for tabletop use, or mount it on a wall using double-sided adhesive. Its compact size makes it ideal for bedrooms, living rooms, or even travel—monitor the climate in your hotel room with ease. Powered by a CR2450 button cell battery, it offers exceptional longevity: up to 2 years in standard mode and 3 years in save battery mode, minimizing maintenance and environmental impact.

Xiaomi Smart Temperature and Humidity Monitor 3 Mini vs. Previous Models
Feature | Smart Temperature and Humidity Monitor 3 Mini | Smart Temperature and Humidity Monitor 3 | Mi Monitor 2 |
---|---|---|---|
Size (mm) | 53 × 45.3 × 13 | Larger | Larger |
Weight (grams) | 30 | 72 | Heavier |
Display Size | 2.1-inch | Smaller | Smaller |
Sensor Precision | 0.1°C, 1% RH | Lower Precision | Lower Precision |
Battery Life | Up to 3 years (save battery mode) | Shorter | Shorter |
Pricing and Availability
Currently available in Germany for €14.99, the Xiaomi Smart Temperature and Humidity Monitor 3 Mini offers remarkable value. Keep an eye on Xiaomi’s global website and major online retailers for its international rollout.

Conclusion
The Xiaomi Smart Temperature and Humidity Monitor 3 Mini is a small device with significant capabilities. Its precise sensors, smart home integration, and long battery life make it a compelling choice for tech enthusiasts and families alike. For its budget-friendly price, it offers premium features that contribute to a healthier, more comfortable home environment. Don’t hesitate to add this tiny powerhouse to your smart home setup.