Bluelab OnePen

The Bluelab OnePen is a premium all-in-one digital meter designed for growers who demand precision, convenience, and smart monitoring. Combining pH, conductivity (EC/CF/ppm), and temperature measurement in a single handheld device, the Bluelab OnePen gives you complete control over your nutrient solution—ensuring optimal conditions for maximum plant health and yield.

Engineered for advanced hydroponic, soil, and coco coir growing systems, the OnePen features built-in Bluetooth connectivity, allowing seamless syncing with the Bluelab app for real-time data tracking, history logging, and remote monitoring. Automatic temperature compensation (ATC) ensures highly accurate readings across varying environments, while guided calibration and on-screen instructions make setup simple and user-friendly.

With its fully waterproof design, durable construction, and replaceable probes, the Bluelab OnePen is built for long-term use in demanding grow rooms. The bright, easy-to-read display and intuitive controls make it suitable for both professional cultivators and serious hobby growers looking to fine-tune their nutrient management.

Key Features & Benefits:

• Measures pH, EC, CF, ppm, and temperature in one device
• Bluetooth connectivity for app integration and data tracking
• Automatic temperature compensation (ATC) for precise readings
• Guided calibration with on-screen instructions
• Fully waterproof and robust design
• Replaceable probes for extended lifespan
• Ideal for hydroponics, soil, and coco growing systems