Overview
A waterproof logger that uses the power of Bluetooth to deliver accurate temperature measurements straight to your mobile device or Windows computer running our free HOBOconnect app. Designed for durability, this compact logger is ideal for measuring temperature in streams, lakes, oceans, and soil environments. Data collection in the field has never been easier!
Purchase an MX Data Plan to get more out of your data and access it from anywhere using the LI-COR Cloud software platform (formerly HOBOlink)!
Mounting Requirements: It is very important that the logger housing does not get distorted when mounted. When mounting these loggers to any non-flat surface, such as rebar or buoy lines, we recommend using the included Mounting Boot (BOOT-MX2201-2202)—also useful for mounting loggers so they can be easily removed for service. Additional mounting boots can be purchased as desired.
Features
- Convenient wireless setup and download via Bluetooth
- Mounting boot included
- Large memory stores 96,000 measurements
- Waterproof to 30 meters (100 feet)
- User-replaceable battery
- Mounting tabs for fast, easy deployment
- LED indicates when temperature exceeds set threshold
- Works with Onset’s free HOBOconnect app
- ±0.5°C (±0.9°F) accuracy
Specifications
Temperature Sensor (MX2201 and MX2202)
Range
-20° to 70°C in air
-4° to 158°F in air
-20° to 50°C in water
-4° to 122°F in water
Accuracy
±0.5°C from -20° to 70°C
±0.9°F from -4° to 158°F
Resolution
0.04°C
0.072°F
Drift
<0.1°C per year
<0.18°F per year
Response Time
17 minutes typical to 90% in air moving 1 m/s, unmounted
7 minutes typical to 90% in stirred water, unmounted
Light Sensor (MX2202)
Range
0 to 167,731 lux
0 to 15,582 lum/ft2
Accuracy
±10% typical for direct sunlight (see Light Measurement on page 2 for more details)
Logger
Logger Operating Range
-20° to 70°C in air
-4° to 158°F in air
Buoyancy (Fresh Water)
2 g positive
0.07 oz positive
Waterproof
To 30.5 m
To 100 ft
Radio Power
1 mW
0 dBm
Transmission Range
Approximately 30.5 m line-of-sight
Approximately 100 ft line-of-sight
Wireless Data Standard
Bluetooth Low Energy (Bluetooth Smart)
Logging Rate
1 second to 18 hours
Time Accuracy
±1 minute per month at 25°C
±1 minute per month at 77°F
Battery
CR2032 3V lithium, user replaceable
Battery Life
1 year typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always On enabled in software.
2 years typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always On disabled 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.
Memory
96,000 measurements
Full Memory Download Time
Approximately 45 seconds; may take longer the farther the device is from the logger
Wetted Materials
Polypropylene case, EPDM O-ring
Dimensions
3.35 x 5.64 x 1.8 cm
1.32 x 2.22 x 0.69 inches
Weight
12.75 g
0.45 oz
Environmental Rating
IP68
