Hobo MX2501 – Onset

The Hobo MX2501 pH and temperature data logger is designed for long-term monitoring of pH in estuaries, lakes, streams, rivers and oceans. It communicates wirelessly via Bluetooth Low Energy (BLE) to the HOBOconnect app on your phone or tablet, making logger setup, calibration, and data offload quick and easy, with no need for extra equipment or complicated calibration procedures. Onset’s HOBOconnect app makes it a snap to configure the Hobo MX2501 logger and manage collected data in the field.
You can view data in graphs, check the operational status of loggers, share data files and graph images, and store data in the cloud.

The HOBOconnect app is a free download from the Apple App Store or Google Play! The HOBOconnect app’s built-in guided calibration feature makes an otherwise difficult task a breeze, seamlessly walking you through the pH calibration process.
Simply follow the on-screen prompts and your logger is calibrated. Built to be compact and rugged, the MX2501 logger has a replaceable pH electrode, an anti-biofouling copper guard, and a PVC housing, making it ideal for freshwater or saltwater environments. It also includes a battery-saving water detection feature for extended battery life and less maintenance.