Highlighted Features
New light sensor offering more accurate light intensity readings for light in the visible light spectrum
Convenient wireless setup and download via Bluetooth Low Energy (BLE)
Large memory stores 96,000 measurements
Waterproof to 30 meters (100 feet)
User-replaceable battery
Mounting tabs for fast, easy deployment
LED alarm notifies you when temperature exceeds set threshold
Works with Onset’s free HOBOmobile app
±0.5°C (±0.9°F) temperature accuracy and ±10% light accuracy typical for direct sunligh
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Temperature Sensor (MX2201 and MX2202)
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Range
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-20° to 70°C (-4° to 158°F) in air
-20° to 50°C (-4° to 122°F) in water
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Accuracy
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±0.5°C from -20° to 70°C (-4° to 158°F)
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Resolution
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0.04°C (0.072°F)
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Drift
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<0.1°C (0.18°F) per year
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Response Time
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17 minutes typical to 90% in air moving 1 m/s, unmounted
7 minutes typical to 90% in stirred water, unmounted
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Light Sensor (MX2202)
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Range
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0 to 167,731 lux (15,582 lum/ft2)
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Accuracy
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±10% typical for direct sunlight (see Light Measurement on page 2 in the manual for more details)
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Logger
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Radio Power
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1 mW (0 dBm)
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Transmission Range
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Approximately 30.5 m (100 ft) line-of-sight
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Wireless Data Standard
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Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0)
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Logger Operating Range
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-20° to 70°C (-4° to 158°F) in air
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Logging Rate
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1 second to 18 hours
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Buoyancy (Fresh Water)
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2g (0.07 oz) positive
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Waterproof
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To 30.5 m (100 ft)
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Memory
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96,000 measurements
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Battery
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CR2032 3V lithium, user replaceable
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Battery Life
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1 year typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always On in software.
2 years typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always Off in software.
Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life.
To ensure proper battery installation, see Battery Information for detailed instructions on replacing the battery.
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Time Accuracy
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± 1 minute per month at 25°C (77°F)
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Full Memory Dowload
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Approximately 45 seconds; may take longer the farther the device is from the logger
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Wetted Materials
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Polypropylene case, EPDM O-ring
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Dimensions
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3.35 x 5.64 x 1.8 cm (1.32 x 2.22 x 0.69 inches)
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Weight
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12.75 g (.45 oz)
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The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).
