HOBO® Pendant® MX Temp (MX2201) and
Temp/Light (MX2202) Logger Manual
MX2201 Model Shown
HOBO Pendant MX
Logger
Models:
• MX Temp (MX2201)
• MX Temp/Light
(MX2202)
Required Items:
• HOBOconnect app
• Mobile device with
Bluetooth and iOS,
iPadOS®, or Android™,
or a Windows
computer with a native
BLE adapter or
supported BLE dongle
Accessories:
• Mounting boot 5-pack
(BOOT-MX2201-2202)
• Solar radiation shield
(RS1 or M-RSA)
• Mounting bracket for
solar radiation shield
(MX2200-RS-BRACKET)
• Replacement O-rings
(MX2201-02-ORING)
21536-N
HOBO Pendant MX loggers measure temperature (MX2201) or temperature/light (MX2202) in
indoor and outdoor environments. Designed for durability, these compact, waterproof loggers
can be used in numerous applications, including fresh and salt water. The loggers are
Bluetooth® Low Energy-enabled for wireless communication with a phone, tablet, or computer.
Using the HOBOconnect® app, you can easily configure the loggers, download logged data to a
mobile device or computer, or automatically upload the data to HOBOlink® for further analysis.
You can also configure the loggers to calculate statistics, set up alarms to trip at specific
thresholds, or enable burst logging in which data is logged at a faster interval when sensor
readings are above or below certain limits.
Specifications
Temperature Sensor (MX2201 and MX2202)
Range
Accuracy
Resolution
Drift
Response Time
Light Sensor (MX2202)
Range
Accuracy
Logger
Logger Operating Range
Buoyancy (Fresh Water)
Waterproof
Radio Power
Transmission Range
Wireless Data Standard
Logging Rate
Time Accuracy
Battery
Battery Life
Memory
Full Memory Download
Time
Wetted Materials
Dimensions
Weight
Environmental Rating
-20° to 70°C (-4° to 158°F) in air
-20° to 50°C (-4° to 122°F) in water
±0.5°C from -20° to 70°C (-4° to 158°F)
0.04°C (0.072°F)
<0.1°C (0.18°F) per year
17 minutes typical to 90% in air moving 1 m/s, unmounted
7 minutes typical to 90% in stirred water, unmounted
2
0 to 167,731 lux (15,582 lum/ft
)
±10% typical for direct sunlight (see Light Measurement on page 2 for
more details)
-20° to 70°C (-4° to 158°F) in air
2 g (0.07 oz) positive
To 30.5 m (100 ft)
1 mW (0 dBm)
Approximately 30.5 m (100 ft) line-of-sight
Bluetooth Low Energy (Bluetooth Smart)
1 second to 18 hours
±1 minute per month at 25°C (77°F)
CR2032 3V lithium, user replaceable
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.
96,000 measurements
Approximately 45 seconds; may take longer the farther the device is
from the logger
Polypropylene case, EPDM O-ring
3.35 x 5.64 x 1.8 cm (1.32 x 2.22 x 0.69 inches)
12.75 g (0.45 oz)
IP68
The CE Marking identifies this product as complying with all relevant
directives in the European Union (EU).
See last page
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