Overview
The HOBO MX2202 waterproof temperature/light level logger leverages the power of Bluetooth Low Energy (BLE) to deliver accurate temperature and light-level measurements straight to your iOS or Android mobile device. Designed for durability, this compact waterproof logger is ideal for measuring temperature in streams, lakes, oceans, and soil environments. Data collection in the field has never been easier!

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 Off disabled in software.
2 years typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always Off enabled 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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Channel science and technology has been dedicated to the teaching, scientific research and the sales, research and development of applied instruments in the fields of soil, plants, environment, hydrology, meteorology and animal physiology, ecology and environmental hydrology for many years.
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