Xiaomi has officially launched the Xiaomi Smoke Detector 2 in China, introducing a more accurate and smarter home safety device for users inside the Xiaomi Home ecosystem. The new model is priced at 149 yuan, which is approximately $22 based on the current exchange rate. The product is currently positioned as a China-exclusive launch for now.
Dual-Light Sensor Reduces False Alarms
The biggest upgrade in the Xiaomi Smoke Detector 2 is its new dual-emission light source sensor. Unlike traditional single-sensor smoke detectors, this model uses both red and blue light sources to better identify real fire conditions.
This system helps the detector distinguish between actual smoke caused by fire and environmental interference such as steam, cooking fumes, or dust. Xiaomi says this design can recognize different combustion states, including smoldering fires and open flames, while reducing unnecessary false alarms.
Smarter Detection With Temperature and Humidity Monitoring
Xiaomi has also added multi-dimensional temperature and humidity monitoring. This means the device does not rely only on smoke concentration. It also checks changes in the surrounding environment to make a more accurate judgment.
This is especially useful in places like kitchens, living rooms, corridors, or bedrooms, where steam or smoke-like particles may appear without a real fire. By combining smoke, temperature, and humidity data, Xiaomi Smoke Detector 2 can make its alerts more reliable.
Three-Level Sensitivity Adjustment
Another practical upgrade is the new three-level sensitivity adjustment. Users can choose different detection levels depending on where the detector is installed.
For example, a kitchen may need a lower sensitivity level to reduce false alarms caused by cooking, while a bedroom or hallway may benefit from higher sensitivity. This makes the device more flexible for different home environments.
Xiaomi HyperConnect Support and Mi Home App Alerts
The Xiaomi Smoke Detector 2 is deeply connected with Xiaomi’s smart home ecosystem through Xiaomi HyperConnect. When smoke or abnormal conditions are detected, the device can warn users in multiple ways:
- Local sound and light alarm
- Mi Home App push notification
- Linked alarms from other Xiaomi smart devices
- Remote or local mute support
- Self-check and silencing through the Mi Home App
This allows users to receive warnings even when they are away from home. It can also work with other smart home products such as lights, cameras, and smart locks to create a more complete emergency response system.
A More Practical Design for Daily Use
The device keeps Xiaomi’s clean and minimal design language. It includes a high-brightness ring indicator light, making alarm status easier to see. Xiaomi has also added a larger physical button, which makes local testing and silencing easier.
Battery life is another major selling point. Xiaomi claims the Smoke Detector 2 can run for up to 5 years on a single battery, reducing the need for frequent maintenance. Installation is also flexible, with both screw mounting and adhesive mounting options available.
Key Features
| Feature | Xiaomi Smoke Detector 2 |
|---|---|
| Sensor | Dual-emission red and blue light source |
| Detection | Smoke, temperature, and humidity monitoring |
| Sensitivity | 3 adjustable levels |
| Connectivity | Xiaomi HyperConnect / Mi Home App |
| Alerts | Local alarm, app notification, linked device alarm |
| Battery life | Up to 5 years |
| Installation | Screw or adhesive mounting |
| China price | 149 yuan, around $22 |








