HOBO MX2301 Temperature/RH Data Logger
Upgrade to MX2301A HOBO Temperature/RH Data Logger
The HOBO MX2300 data loggers requires the HOBOmobile App and a compatible mobile device. The system requirements for the HOBOmobile app can be found at the bottom of our HOBOmobile software page.
Overview
The HOBO MX2301 is a weatherproof data logger with built-in temperature and relative humidity 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.
- 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° and +/- 2.5% RH
In what environment does this data logger operate?
This data logger operates in an outdoor environment.
What measurements does this data logger support?
The MX2301 data logger supports the following measurements: Relative Humidity and Temperature
The country of origin for this product is the United States.
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Temperature Sensor |
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Range |
MX2301 and MX2305 internal sensors: -40 to 70°C (-40 to 158°F) |
|
Accuracy |
±0.25°C from -40 to 0°C (±0.45 from -40 to 32°F) |
|
Resolution |
0.04°C (0.072°F) |
|
Drift |
<0.01°C (0.018°F) per year |
|
RH Sensor (MX2301, MX2302 only) |
|
|
Range |
0 to 100% RH, -40° to 70°C (-40° to 158°F); exposure to conditions below -20°C (-4°F) or above 95% RH may temporarily increase the maximum RH sensor error by an additional 1% |
|
Accuracy |
±2.5% from 10% to 90% (typical) to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% RH and above 90% RH ±5% typical |
|
Resolution |
0.05% |
|
Drift |
<1% per year typical |
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Response Time: Temperature (typical, to 90% of change) |
Without Solar Radiation Shield |
With RS1/M-RSA Solar Radiation Shield |
With RS3-B Solar Radiation Shield |
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|
MX2301 internal sensor |
17 minutes in air moving 1 m/sec |
24 minutes in air moving 1 m/sec |
N/A |
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MX2302 external sensor |
2 minutes, 30 seconds in air moving 1 m/sec |
6 minutes in air moving 1 m/sec |
5 minutes in air moving 1 m/sec |
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MX2303/MX2304 external sensors |
3 minutes in air moving 1 m/sec; 20 seconds in stirred water |
7 minutes in air moving 1 m/sec |
4 minutes in air moving 1 m/sec |
||||
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MX2305 internal sensor |
17 minutes in air moving 1 m/sec |
24 minutes in air moving 1 m/sec |
N/A |
|
Response Time: RH (typical, to 90% of change) |
Without Solar Radiation Shield |
With RS1/M-RSA Solar Radiation Shield |
With RS3-B Solar Radiation Shield |
||||
|
MX2301 internal sensor |
1 minute in air moving 1 m/sec |
1 minute in air moving 1 m/sec |
N/A |
||||
|
MX2302 external sensor |
4 minutes in air moving 1 m/sec |
4 minutes in air moving 1 m/sec |
4 minutes in air moving 1 m/sec |
|
Logger |
|
|
Radio Power |
1 mW (0 dBm) |
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Transmission Range |
Approximately 30.5 m (100 ft) line-of-sight |
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Wireless Data Standard |
Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0) |
|
Logger Operating Range |
-40° to 70°C (-40° to 158°F) |
|
Logging Rate |
1 second to 18 hours |
|
Logging Modes |
Fixed interval (normal, statistics) or burst |
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Memory Modes |
Wrap when full or stop when full |
|
Start Modes |
Immediate, push button, date & time, or next interval |
|
Stop Modes |
When memory full, push button, date & time, or after a set logging period |
|
Time Accuracy |
±1 minute per month 0° to 50°C (32° to 122°F) |
|
Battery Type |
2/3 AA 3.6 Volt lithium, user replaceable |
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Battery Life |
2 years, typical with logging interval of 1 minute and Power Saving Mode disabled; 5 years, typical with logging interval of 1 minute and Power Saving Mode enabled. Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life. |
|
Memory |
128 KB (84,650 measurements, maximum) |
|
Full Memory Download Time |
Approximately 60 seconds; may take longer the further the device is from the logger |
|
Dimensions |
Logger housing: 10.8 x 5.08 x 2.24 cm (4.25 x 2.0 x 0.88 in.) |
|
Weight |
Logger: 75.5 g (2.66 oz) Solar radiation shield bracket: 20.4 g (0.72 oz) |
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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 and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
- HOBO MX2301 Temp/RH Data Logger
- Screws
- Cable ties
The following are associated resources for this product. In general users of this product can gain insight into its possible use by utilizing the resources below.
Customers Also Bought
Recommended for temperature and relative humidity measurement accuracy in locations exposed to direct or reflected sunlight. Mounts on tripods, masts, or flat vertical surfaces. The following loggers require mounting brackets for use with the M-RSA:
- HOBO MX2301 or MX2305 loggers require the MX2300-RS-BRACKET
- HOBO U22 or U23-001 loggers require the U23 Clamp Kit.
This bracket is required for mounting HOBO MX2301A and MX2305 loggers in either an RS1 or M-RSA solar radiation shield.
Use the RS3-B Solar Radiation Shield with HOBO external sensors for improved temperature measurement accuracy in locations exposed to sunlight. The small size and unobstructed airflow of this shield provides a faster response to changing conditions than larger radiation shields.
The RS3-B Solar Radiation Shield works with most of Onset's external temperature and temperature/relative humidity sensors, including those for our award-winning HOBO Weather Station products.
For customers looking for a radiation shield large enough to mount a HOBO data logger inside it, Onset also offers two other models of solar radiation shields; the RS1 and the pre-assembled M-RSA
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Detailed Specifications
HOBO MX2301 Temperature/RH Data Logger
|
Temperature Sensor |
|
|
Range |
MX2301 and MX2305 internal sensors: -40 to 70°C (-40 to 158°F) |
|
Accuracy |
±0.25°C from -40 to 0°C (±0.45 from -40 to 32°F) |
|
Resolution |
0.04°C (0.072°F) |
|
Drift |
<0.01°C (0.018°F) per year |
|
RH Sensor (MX2301, MX2302 only) |
|
|
Range |
0 to 100% RH, -40° to 70°C (-40° to 158°F); exposure to conditions below -20°C (-4°F) or above 95% RH may temporarily increase the maximum RH sensor error by an additional 1% |
|
Accuracy |
±2.5% from 10% to 90% (typical) to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% RH and above 90% RH ±5% typical |
|
Resolution |
0.05% |
|
Drift |
<1% per year typical |
|
Response Time: Temperature (typical, to 90% of change) |
Without Solar Radiation Shield |
With RS1/M-RSA Solar Radiation Shield |
With RS3-B Solar Radiation Shield |
||||
|
MX2301 internal sensor |
17 minutes in air moving 1 m/sec |
24 minutes in air moving 1 m/sec |
N/A |
||||
|
MX2302 external sensor |
2 minutes, 30 seconds in air moving 1 m/sec |
6 minutes in air moving 1 m/sec |
5 minutes in air moving 1 m/sec |
||||
|
MX2303/MX2304 external sensors |
3 minutes in air moving 1 m/sec; 20 seconds in stirred water |
7 minutes in air moving 1 m/sec |
4 minutes in air moving 1 m/sec |
||||
|
MX2305 internal sensor |
17 minutes in air moving 1 m/sec |
24 minutes in air moving 1 m/sec |
N/A |
|
Response Time: RH (typical, to 90% of change) |
Without Solar Radiation Shield |
With RS1/M-RSA Solar Radiation Shield |
With RS3-B Solar Radiation Shield |
||||
|
MX2301 internal sensor |
1 minute in air moving 1 m/sec |
1 minute in air moving 1 m/sec |
N/A |
||||
|
MX2302 external sensor |
4 minutes in air moving 1 m/sec |
4 minutes in air moving 1 m/sec |
4 minutes in air moving 1 m/sec |
|
Logger |
|
|
Radio Power |
1 mW (0 dBm) |
|
Transmission Range |
Approximately 30.5 m (100 ft) line-of-sight |
|
Wireless Data Standard |
Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0) |
|
Logger Operating Range |
-40° to 70°C (-40° to 158°F) |
|
Logging Rate |
1 second to 18 hours |
|
Logging Modes |
Fixed interval (normal, statistics) or burst |
|
Memory Modes |
Wrap when full or stop when full |
|
Start Modes |
Immediate, push button, date & time, or next interval |
|
Stop Modes |
When memory full, push button, date & time, or after a set logging period |
|
Time Accuracy |
±1 minute per month 0° to 50°C (32° to 122°F) |
|
Battery Type |
2/3 AA 3.6 Volt lithium, user replaceable |
|
Battery Life |
2 years, typical with logging interval of 1 minute and Power Saving Mode disabled; 5 years, typical with logging interval of 1 minute and Power Saving Mode enabled. Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life. |
|
Memory |
128 KB (84,650 measurements, maximum) |
|
Full Memory Download Time |
Approximately 60 seconds; may take longer the further the device is from the logger |
|
Dimensions |
Logger housing: 10.8 x 5.08 x 2.24 cm (4.25 x 2.0 x 0.88 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 and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
