HOBO by Onset U20L-04 - Water Level (13 ft) Data Logger
The HOBO U20L-004 is a low-cost, research-grade data logger for continuously measuring water level and temperature in a wide range of underwater environments. It features 0.1% measurement accuracy, a polypropylene housing for use in both fresh and salt water, and a non-vented design for convenient and hassle-free deployment.