Part Number - MX2302

HOBO MX2302 External Temperature/RH Sensor Data Logger

Discontinued

A Bluetooth weatherproof data logger with external temperature and relative humidity sensors.

Important Information

Requires the HOBOconnect app and a compatible mobile device. The MX2302 is designed for use with the RS3-B Solar Radiation Shield and is not compatible with the RS3 version.

Compatible with

HOBOmobile

Product upgrade options

MX2302A

HOBO External Temperature/RH Sensor Data Logger

$225.00 USD
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Overview

The HOBO MX2302 is a weatherproof data logger with external temperature and relative humidity sensors. Leveraging Bluetooth, the logger enables easy, fast set up and data download directly from your mobile device, and provides high-accuracy measurements in harsh outdoor environments.

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Download on the Apple App Store

 

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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° and +/- 2.5% RH
Country of Origin
United States

Specifications

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 (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.)
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.

Compatible items

NIST Setup & Certifications

NIST-RH-ONEPOINT
$105.00 USD
NIST-RH-THREEPOINT
$165.00 USD
NIST-TEMP-POINT
$49.00 USD

Solar Radiation Shields

RS3-B
$75.00 USD

Compliance Certificates

COMPLIANCE CERT
$29.00 USD

Batteries

HRB-2/3AA
$17.00 USD

What's in the box

  • HOBO MX2302 Ext Temp/RH Data Logger
  • Screws
  • Cable ties

Documents

HOBO® MX2300 Series Data Logger Manual

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Quick Start for the HOBO® MX2300 Series Data Loggers

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MX Data Logger Guide

This guide will walk you through the basic steps of data logging, including setting up your new data logger, downloading and sharing data, and the option to upload your data to the cloud.
View View

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Certification

Initial Purchase RH NIST Calibration Service Certification

Testing and certification of HOBO data logger and sensor RH (relative humidity) accuracy using standards traceable to the U.S. National Institute of Standards & Technology (NIST).
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Certificate of Calibration
Certification

NIST Temperature Point Certification

Temperature point certification charge on a per-data logger basis.
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Mounting

Solar Radiation Shield

Use the RS3-B Solar Radiation Shield with HOBO external sensors for improved temperature measurement accuracy in locations exposed to sunlight
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