Onset MX801 Water Data Logger (-40°~50°C)

Operating Range: -40° to 50°C (-40° to 122°F), cannot be frozen in ice

Maximum Cable Length: 120m (400 ft)

Logging Rate: 5 second to 18 hours

Time Accuracy: ±1 minute per month 0° to 50°C (32° to 122°F)

Battery: Four AA, 1.5 V lithium batteries, user replaceable

Memory:

730,000 measurements, divided between channels (4 Mbyte memory)

Dimensions:

Logger diameter: 4.14 cm (1.63 inches)

Length without sensor: 20 cm (8 inches)

Length with W-CTD sensor: 36 cm (14 inches)

Length with W-CT sensor: 33 cm (13 inches)

Mounting loop: 12.7 x 22.6 mm (0.5 x 0.89 inches)

Weight: Logger Head Only: 224 g (7.90 oz)

Delivery scope:

HOBO MX801 data logger

Coupler

3/32” Allen wrench

HOBO MX800 Series multiparameter wireless data loggers work with interchangeable sensors to provide a highly configurable solution for monitoring water conductivity/salinity, temperature, depth, and dissolved oxygen. Available in both an easy-to-deploy, fully submersible model (MX801) and a direct read model (MX802) for convenient data offload that doesn't require having to remove sensors from the water.

User guide

Video