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  • MX2305
  • MX2305
  • MX2305
  • MX2305
  • MX2305
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HOBO MX2305 Temperature Data Logger

Part # MX2305
 
 

* All US online orders ship free over $250 (ground shipping only)

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.

Learn MoreOther Products in this Series

Overview

The HOBO MX2305 is a weatherproof data logger with an internal temperature sensor. 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.

  

Highlighted Features

  • 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°

In what environment does this data logger operate?

This data logger operates in an outdoor environment.

What measurements does this data logger support?

The MX2305 data logger supports the following measurement: Temperature

The HOBO MX2305 is a weatherproof data logger with an internal temperature sensor. 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.

  

Highlighted Features

  • 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°

In what environment does this data logger operate?

This data logger operates in an outdoor environment.

What measurements does this data logger support?

The MX2305 data logger supports the following measurement: Temperature

Learn More

The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.

Temperature Sensor

Range

MX2301 and MX2305 internal sensors: -40 to 70°C (-40 to 158°F)
MX2302 external temperature sensor: -40 to 70°C (-40 to 158°F)
MX2303 and MX2304 external sensors: -40 to 100°C (-40 to 212°F), with tip and cable immersion in fresh water up to 50°C (122°F) for one year

Accuracy

±0.25°C from -40 to 0°C (±0.45 from -40 to 32°F)
±0.2°C from 0 to 70°C (±0.36 from 32 to 158°F)
±0.25°C from 70 to 100°C (±0.45 from 158 to 212°F), MX2303 and MX2304 only

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

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

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.)
External temperature sensor diameter: 0.53 cm (0.21 in.)
External temperature/RH sensor diameter: 1.17 cm (0.46 in.)
External sensor cable length: 2 m (6.56 ft)
Solar radiation shield bracket: 10.8 x 8.3 cm (4.25 X 3.25 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.

    • HOBO MX2305 Temp Data Logger
    • Screws
    • Cable ties

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M-RSA

Preassembled for quick deployment, the solar radiation shield is recommended for temperature and relative humidity measurement accuracy in locations exposed to direct or reflected solar radiation. 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 .
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MX2300-RS-BRACKET

This bracket is required for mounting HOBO MX2301 and MX2305 loggers in either an RS1 or M-RSA solar radiation shield. 

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RS1

The solar radiation shield is recommended for temperature and relative humidity measurement accuracy in locations exposed to direct or reflected solar radiation. Mounts on tripods, masts, or flat vertical surfaces. The RS1 is ideal for use with loggers such as the HOBO MX2300, HOBO Pendant and U-Series data loggers. The following loggers require mounting brackets for use with the RS1:

  • HOBO MX2301 or MX2305 loggers require the MX2300-RS-BRACKET
  • HOBO U22 or U23-001 loggers require the U23 Clamp Kit .
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