Onset HOBO U20L [U20L-04] Freshwater/Saltwater Water Level Data Logger, 0-4 m (0-13 ft)

The Onset HOBO U20L-04 Water Level Data Logger is a low-cost, research-grade instrument for continuously measuring water level and temperature in a wide range (up to 13 feet) 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.

Note: A calibration certificate is not offered for this logger. If you require a NIST-traceable calibration certificate, please see the U20-001-04 (freshwater) or U20-001-04-Ti (saltwater) data loggers.

Note: U20L-04 data loggers require the HOBOware software (free to download) to operate. Please also note that a USB interface cable comes with the purchase of a HOBOware Pro CD (BHW-PRO-CD), only.