Disc Mini 4-in-1 Bluetooth Environmental Sensor | Temperature Humidity Pressure
Complete Environmental Intelligence
The Disc Mini 4-in-1 is the most comprehensive compact Bluetooth sensor in our range—monitoring temperature, humidity, barometric pressure, and dew point in a single device. Perfect for weather monitoring, altitude-sensitive applications, and environments where atmospheric pressure impacts product quality.
Four Sensors. One Device. Total Control.
At just 33mm (1.3") diameter, store up to 6,000 readings with Bluetooth range up to 75m (246ft). Connect with the free bmLogger app to monitor all four parameters in real-time, analyse trends, and export detailed CSV reports.
Advanced Monitoring for Demanding Applications
Ideal for meteorological monitoring, aerospace, research laboratories, altitude-sensitive logistics, and wine storage. Add a BM Gateway for 24/7 automated cloud monitoring with alerts on any parameter.
Key Features
Bluetooth 4.3
Bluetooth Low Energy technology for reliable connectivity.
1-Year Battery
User-replaceable CR2032 coin cell battery.
High Precision
±0.5°C temperature accuracy for reliable monitoring applications.
6K Data Points
On-device storage for up to 6,000 readings with configurable intervals.
Free Mobile App
iOS and Android apps for real-time monitoring and data export. APIs to integrate into your own apps or systems.
Internet Enabled
Can be internet enabled by utilizing the BM Gateway and bmCloud.
Frequently Asked Questions
The Disc Mini 4-in-1 adds barometric pressure sensing alongside temperature, humidity, and dew point. It uses the Bosch BME280 sensor chip—the same integrated environmental sensor used in weather stations and smartphones—providing all four measurements in a compact form factor.
The 4-in-1 stores 6,000 readings (compared to 8,000 for the 3-in-1 and 20,000 for temperature-only models) because each reading includes four measurements instead of one or two. At a 15-minute logging interval, this still provides over 60 days of data before the circular buffer overwrites.
Barometric pressure helps track weather changes (falling pressure often indicates storms), monitor altitude-sensitive environments, optimize HVAC systems, and detect changes in sealed or pressurized spaces. It's valuable for weather enthusiasts, wine cellars, and scientific applications.
Yes, the Disc Mini 4-in-1 is excellent for personal weather tracking. Combine barometric pressure trends with temperature and humidity to predict weather changes, understand microclimate conditions in your garden, or maintain optimal conditions in greenhouses.
The CR2032 battery typically lasts up to 1 year with a 15-minute logging interval. The battery is user-replaceable—simply twist the back cover to access the battery compartment.
Both use the same Bosch BME280 sensor chip with identical accuracy. The Disc Mini 4-in-1 is smaller (33mm vs 37mm), uses a CR2032 battery (1-year vs 5-year life), and stores 6,000 readings (vs 25,000). Choose the Mini for compact size or the Maxi for longer battery life and data storage.
Yes, the Disc Mini 4-in-1 is fully compatible with the BM Gateway. Connect to bmCloud for remote monitoring of all four measurements, automatic data logging, and access your environmental data from anywhere.