Data Logger

Disc Maxi 4 in 1 with Alerts - Bluetooth Enabled Environmental Sensor and Logger

SKU: disc-maxi-alerts-004

Monitor and log temperature, humidity, dew point, and barometric pressure with precision using the Disc Maxi 4-in-1 — the most comprehensive wireless environmental data logger in our range, trusted by meteorological stations, cleanrooms, research laboratories, and altitude-sensitive storage applications.

Incorporates the proven BME280 environmental sensor from Bosch Sensortec, combining four critical measurements in one compact device. With 25,000 data points of on-board storage, programmable threshold alerts to your phone, and long battery life — ideal for applications where atmospheric pressure monitoring is essential alongside standard environmental conditions.

Perfect for weather monitoring, altitude compensation, cleanroom certification, HVAC validation, and scientific research requiring complete environmental data.

$51.90
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Key Features

Bluetooth 5.3

Recent Bluetooth Low Energy technology for reliable, long-range connectivity.

5-Year Battery

Extended battery life with user-replaceable CR2477 coin cell.

High Precision

±0.5°C temperature accuracy for reliable monitoring.

25K Data Points

On-device storage for up to 25,000 readings with configurable intervals.

Free Mobile App

iOS and Android apps for real-time monitoring, alerts, 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.

Dimensions 37mm/1.48" diameter × 15mm/0.59"
Weight 15g / 0.5oz
Material Polycarbonate/TPE
IP Rating IP54
Temperature Range -40°C/-40°F to +85°C/185°F
Temperature Accuracy ±0.5°C/±0.9°F (typical)
Humidity Range 0-100% RH
Humidity Accuracy ±3% RH (typical)
Barometric Pressure Range 300hPa to 1100hPa
Barometric Pressure Accuracy ±1hPa (typical)
Bluetooth Chip Nordic nRF52832 based
Sensor Chip Bosch BME280 View Specs
Bluetooth Version 5.3 Low Energy
Operating Range Up to 100m/300ft (line of sight)
WiFi Gateway Compatible Yes
Battery Type CR2477 Lithium Metal Coin Cell (replaceable)
Battery Life Up to 5 years
Memory 25,000 readings (circular buffer)
Configurable Logging Interval 1 second to 24 hours
Alerts Temperature, Humidity, Barometric Pressure, Dew Point
Customizable Yes

Frequently Asked Questions

The Disc Maxi 4-in-1 measures temperature, humidity, barometric pressure, and calculates dew point. The Bosch BME280 sensor chip provides all four measurements in a single compact device, making it ideal for comprehensive environmental monitoring.

The CR2477 battery typically lasts up to 5 years under normal use conditions. Battery life depends on the configured logging interval and environmental conditions. The battery is user-replaceable.

Barometric pressure monitoring helps track weather changes, altitude variations, and air pressure in sealed environments. It's valuable for weather stations, HVAC optimization, altitude-sensitive storage, and predicting weather patterns that may affect temperature-sensitive goods.

The Disc Maxi 4-in-1 has an IP54 rating, meaning it's protected against dust ingress and water splashes from any direction. It's suitable for indoor use and sheltered outdoor locations but not for submersion or direct water exposure.

The Disc Maxi 4-in-1 has a range of up to 100 meters in open space (line of sight). In indoor environments with walls and obstacles, typical range is 20-50 meters depending on building materials.

Yes, the bmLogger mobile app allows you to configure high and low threshold alerts for temperature, humidity, barometric pressure, and dew point. You'll receive push notifications when any reading exceeds your set limits.

The 4-in-1 adds barometric pressure sensing and uses the Bosch BME280 chip with ±0.5°C accuracy and 25,000 data points. The 3-in-1 uses the Sensirion SHT4x chip with higher ±0.1°C accuracy and 50,000 data points but without pressure sensing. Choose based on whether you need atmospheric pressure data or maximum temperature precision.