The HOBO MX2303 is a weatherproof data logger with two external temperature sensors. Leveraging Bluetooth Low Energy, the logger enables easy, fast set up and data download directly from your mobile device, and provides high-accuracy measurements in harsh outdoor environments. Supported Measurements: Temperature Key Advantages: • Convenient wireless setup and download via Bluetooth Low Energy (100-foot range) • Retrieve data in hard-to-reach locations • Visual alarms alert you to out-of-range conditions • Compact, weatherproof housing with built-in mounting • View current data in real time with Onset’s free HOBOmobile app • Share downloaded data easily from your mobile device • Accuracy: +/- 0.2C°

HOBO MX2303 Data Logger Specifications Temperature Sensor Range MX2301 and MX2305 internal sensors: -40 to 70°C (-40 to 158°F) MX2302 external temperature sensor: -40 to 70°C (-40 to 158°F) MX2303 and MX2304 external sensors: -40 to 100°C (-40 to 212°F), with tip and cable immersion in fresh water up to 50°C (122°F) for one year Accuracy ±0.25°C from -40 to 0°C (±0.45 from -40 to 32°F) ±0.2°C from 0 to 70°C (±0.36 from 32 to 158°F) ±0.25°C from 70 to 100°C (±0.45 from 158 to 212°F), MX2303 and MX2304 only Resolution 0.04°C (0.072°F) Drift <0.01°C (0.018°F) per year RH Sensor (MX2301, MX2302 only)...

Logger housing: 10.8 x 5.08 x 2.24 cm (4.25 x 2.0 x 0.88 in.) External temperature sensor diameter: 0.53 cm (0.21 in.) External temperature/RH sensor diameter: 1.17 cm (0.46 in.) External sensor cable length: 2 m (6.56 ft) Solar radiation shield bracket: 10.8 x 8.3 cm (4.25 X 3.25 in.) Weight Logger: 75.5 g (2.66 oz) Solar radiation shield bracket: 20.4 g (0.72 oz) Materials Acetal, silicone gasket, stainless steel screws Environmental Rating NEMA 6 and IP67 The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). This equipment has been tested...