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OVERVIEW
Monitor your outdoor environment remotely with the MX2304
The HOBO MX2304 is a weatherproof data logger with one external temperature sensor. Leveraging Bluetooth Low Energy, the logger enables easy, fast setup and data download directly from your mobile device with Onset’s free HOBOconnect app. The MX2304 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 HOBOconnect app
- Share downloaded data easily from your mobile device
- Accuracy: +/- 0.2C°
Important:
The HOBO MX2300 data loggers require the HOBOconnect App and a compatible mobile device. The system requirements for the HOBOconnect app can be found at the bottom of our HOBOconnect software page.
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SPECIFICATIONS
Temperature Sensor
Range MX2301A and MX2305 internal sensors: -40 to 70°C (-40 to 158°F)
MX2302A 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 yearAccuracy ±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 onlyResolution MX2301A and MX2302A: 0.02°C (0.036°F)
MX2303, MX2304, and MX2305: 0.04°C (0.072°F)Drift <0.01°C (0.018°F) per year Relative Humidity Sensor* (MX2301A, MX2302A 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 0.01% Drift <1% per year typical Response Time (typical, to 90% of change)
Temperature
Without Solar
Radiation ShieldWith RS1/M-RSA
Solar Radiation ShieldWith RS3-B Solar
Radiation ShieldMX2301A
internal sensor17 minutes in air
moving 1 m/sec24 minutes in air
moving 1 m/secNA MX2302A
external sensor3 minutes, 45 seconds
in air moving 1 m/sec7 minutes, 45
seconds in air
moving 1 m/sec6 minutes, 30
seconds in air
moving 1 m/secMX2303/MX2304
external sensors3 minutes in air
moving 1 m/sec; 20
seconds in stirred
water7 minutes in air
moving 1 m/sec4 minutes in air
moving 1 m/secMX2305
internal sensor17 minutes in air
moving 1 m/sec24 minutes in air
moving 1 m/secNA RH
Without Solar
Radiation ShieldWith RS1/M-RSA
Solar Radiation ShieldWith RS3-B Solar
Radiation ShieldMX2301A
internal sensor30 seconds in air
moving 1 m/sec40 seconds in air
moving 1 m/secNA MX2302A
external sensor15 seconds in air
moving 1 m/sec30 seconds in air
moving 1 m/sec30 seconds in air
moving 1 m/secLogger
Operating Range -40° to 70°C (-40° to 158°F) Radio Power 1 mW (0 dBm) Transmission Range Approximately 30.5 m (100 ft) line-of-sight Wireless Data Standard Bluetooth Low Energy (Bluetooth Smart) 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 Bluetooth Always On enabled; 5 years, typical with logging interval of 1 minute and Bluetooth Always On disabled. Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life. Memory MX2301A and MX2302A: 128 KB (63,488 measurements, maximum) MX2303, MX2304, and MX2305: 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 CE The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). *Per RH sensor manufacturer data sheet
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HOBOCONNECT
Download the free HOBOconnect app for your iOS or Android mobile device or Windows computer today.
Onset’s HOBOconnect app, accessed from a free download from the iTunes or Google Play app store, or your pc, makes it quick and easy to configure compatible MX Series data loggers (chart below) and manage the collected data. From your mobile device, tablet, or Windows computer, users can view data in graphs, check the operational status of loggers, share data files and graph images for analysis in Excel, Numbers, and other applications, and store data in the cloud. HOBOconnect also makes it fast and easy to set up audible alarm notifications so users are immediately notified of problems.
Learn more about HOBOconnect >>
HOBO MX2304 – External Temperature Sensor Bluetooth Data Logger
$375.00 ex GST
The HOBO MX2304 is a weatherproof data logger with One External temperature sensors. Leveraging Bluetooth Low Energy, the logger enables easy, fast set up and data download directly from your mobile device
Need Remote Access?
Add the MX Gateway for remote access to your data in the LI-COR cloud IoT Platform (formerly HOBOlink).
