HOBO Relative Humidity/Temperature/Light/External Data Logger

Part # H08-004-02
This product is discontinued.

Upgrade to U12-012


A four-channel data logger with internal temperature, light intensity, and user-replaceable relative humidity sensors, and one external channel that accepts a wide range of external sensors. This data logger records up to 7,943 measurements.

Highlighted Features

  • 8-bit resolution
  • Programmable start date/time
  • Programmable sampling rate (0.5 second to 9 hours)


The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.

Operating range (logger): -20°C to +70°C (-4°F to +158°F), 0 - 95% RH non-condensing
Time accuracy: approx. ±1 minute per week (±100 ppm at +20°C or +68°F), full dependance shown in manual
Measurement capacity: 7944 measurements total, stored in non-volatile memory
Size: 2.4" x 1.9" x 0.8"
Weight: approximately 1 oz.
Battery: CR-2032 (lithium) user-replaceable
Battery life (continuous use): 1 year
Storage temperature: -40°C to +75°C (-40°F to +167°F)

Documentation for the H08-004-02