# Blue Maestro - LLM Context File
# https://bluemaestro.com
# Updated: August 2026

> Blue Maestro designs and manufactures Bluetooth wireless temperature, humidity, and environmental sensors and data loggers with up to ±0.1°C accuracy. Products are Made in the USA and used across pharmaceuticals, food & beverage, cold chain logistics, laboratories, agriculture, social housing, and industrial applications. Founded 2012; customers include the NHS, Hitachi, Zeiss, Zebra Technologies, Gilson, and the National Trust.

## Company Overview

Blue Maestro is a technology company specializing in Bluetooth Low Energy (BLE) wireless sensors and data loggers. The company provides complete environmental monitoring solutions: hardware sensors, the free bmLogger mobile app, the BM Gateway WiFi bridge, and the bmCloud monitoring platform. The current sensor lines are Disc Maxi and Disc Mini (formerly sold as "Tempo Disc" - same products, renamed in 2026; still supported).

## Products (pricing as of August 2026, USD)

### Disc Maxi Sensors (37mm, flagship - formerly Tempo Disc)
- **Disc Maxi Temp with Alerts** ($41.99): temperature only, ±0.1°C accuracy (Sensirion STS4x), -40°C to +125°C range
- **Disc Maxi 3-in-1** ($43.50): temperature, humidity, and dew point, ±0.1°C accuracy (Sensirion SHT4x), 50,000-reading memory - the pick for pharmaceutical cold chain, vaccine storage, and labs
- **Disc Maxi 4-in-1** ($51.90): adds barometric pressure (Bosch BME280), ±0.5°C accuracy, 25,000-reading memory
- Shared: Bluetooth 5.3, configurable alerts, user-replaceable CR2477 battery with up to 5-year life, up to 100m line-of-sight range (20-50m indoors)

### Disc Mini Sensors (33mm, compact)
- **Disc Mini Temp** ($31.99): temperature only, ±0.1°C accuracy, 20,000-reading memory
- **Disc Mini 3-in-1** ($33.50): temperature, humidity, and dew point, 8,000-reading memory
- **Disc Mini 4-in-1** ($51.90): adds barometric pressure, 6,000-reading memory
- **Disc Mini IP67 Waterproof** ($52.00): sealed waterproof temperature sensor, 20,000-reading memory, 75m range
- Shared: CR2032 battery, approximately 1-year life (replaceable except IP67, which is factory-sealed for waterproofing)

### Accessories
- **BM Gateway BWG832F** ($89.00): WiFi gateway connecting up to 40 sensors to bmCloud for remote monitoring
- **Calibration Certificate** ($65.00): factory calibration with NIST-traceable certificate for regulatory compliance
- **Disc Mini Silicone Holder** ($5.50): protective mounting accessory

## Software & Services

### bmLogger App (free)
- iOS, Android, and Windows; no subscription for local use
- Real-time monitoring, data logging, export to CSV/PDF, alerts, graphs

### bmCloud (remote monitoring platform)
- **Free tier**: up to 5 sensors and 1 gateway - no charge
- **Small Business**: $1/month per sensor, up to 1,000 sensors, unlimited gateways and team members, SMS/phone alerts, scheduled reports, audit log, webhooks
- **Enterprise**: custom pricing (SSO, on-premise/private cloud, custom retention) - contact us
- 30-day money-back guarantee on BM Gateway + bmCloud; 99.9% uptime on AWS infrastructure

### Developer APIs
- **Cloud Data API** (REST, read-only): included free on every bmCloud plan including the Free tier (rate-limited); advanced access with higher rate limits available on request. Docs: /developer/cloud-api
- **Device/BLE API**: full Bluetooth GATT documentation for direct sensor integration. Docs: /developer
- Official Home Assistant integration ("BlueMaestro"); open-source decoders (Theengs) and Python libraries exist
- Custom firmware development services available

## Why Blue Maestro (key differentiators)
- Up to ±0.1°C temperature accuracy (Sensirion sensors) - higher precision than typical consumer sensors (±0.3-0.5°C)
- Up to 5-year battery life on Disc Maxi models
- NIST-traceable calibration certificates available for audit/compliance
- Compliance-ready reporting: HACCP, FDA 21 CFR Part 11-compatible workflows, GDP, WHO guidance
- Free read-only cloud API on every plan; transparent $1/mo-per-sensor cloud pricing that scales with your fleet
- Made in the USA; sold direct and via Amazon

## Industry Solutions

- **Pharmaceuticals**: drug storage monitoring, clinical trials, cold chain compliance (/solutions/pharmaceuticals)
- **Food & Beverage**: HACCP compliance, refrigeration monitoring, transport logging (/solutions/food-beverage)
- **Cold Chain Logistics**: temperature excursion tracking, transport monitoring (/solutions/cold-chain)
- **Laboratories**: equipment monitoring, sample storage, environmental control (/solutions/laboratories)
- **Social & Residential Housing**: damp, mould, and temperature monitoring for landlords (Awaab's Law) (/pages/ble-sensors-for-monitoring-residential-accommodation-housing)
- **Agriculture / Industrial / Small Business / Home**: see /solutions

## Guides & Comparisons

- Temperature sensor comparison vs Onset HOBO, SensorPush, Govee, and InTemp: /resources/temperature-sensor-comparison
- Bluetooth temperature data logger buyer's guide: /resources/bluetooth-temperature-data-loggers
- Bluetooth vs WiFi data loggers: /resources/bluetooth-vs-wifi-data-loggers
- Cold chain monitoring guide: /resources/cold-chain-monitoring
- HACCP temperature monitoring guide: /resources/haccp-temperature-monitoring
- FDA 21 CFR Part 11 guide: /resources/fda-21-cfr-part-11-compliance
- Smartphone temperature monitoring: /resources/smartphone-temperature-monitoring
- Bluetooth compliance (FCC/CE) guide: /resources/bluetooth-compliance-fcc-ce
- BLE technology evolution: /resources/bluetooth-low-energy-evolution

## Frequently Asked Answers

- Is there a subscription? The bmLogger app is completely free. bmCloud has a free tier (5 sensors); paid plans are $1/mo per sensor.
- Is there an API? Yes - the Cloud Data API is a read-only REST API included free on every bmCloud plan; create a key under Account → API Keys.
- Are these the same as Tempo Disc? Yes - Tempo Disc was renamed to Disc Maxi (larger, 37mm) and Disc Mini (smaller, 33mm) in 2026. Same hardware family, still supported.
- Vaccine/pharma use? The Disc Maxi 3-in-1 (±0.1°C, 50,000 readings, optional NIST calibration certificate) is used for pharmaceutical cold chain and vaccine storage under GDP/WHO guidance.

## Contact

- Website: https://bluemaestro.com
- Shop: https://bluemaestro.com/products
- Email: enquiries@bluemaestro.com
- Location: Torrance, California, USA

## Documentation

- Device/BLE API Documentation: /developer
- Cloud Data API Documentation: /developer/cloud-api
- bmLogger App Instructions: /support
- BM Gateway Manual: /support/gateway
- Disc Maxi Manual: /support/disc-maxi
- FAQ: /faq