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Part Number -
MX1104
HOBO Temp/RH/Light/Ext-Analog Data Logger
Bluetooth-enabled logger
$235.00 USD
Measures and transmits temperature, relative humidity, and light intensity data wirelessly. Includes an external analog input to attach a variety of additional sensors.
Important Information
Requires a compatible mobile device or Windows computer and the HOBOconnect app. System requirements can be found at the bottom of the HOBOconnect software page.
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Compatible with
Overview
Measures and transmits temperature, relative humidity, and light intensity data wirelessly. Includes an external analog input to attach a variety of additional sensors.
This self-contained, Bluetooth-enabled, wireless data logger lets you use your mobile device or Windows computer and Onset's free HOBOconnect app to access data, at any time, when within 100 feet of the logger. Configure the logger, read out data, view data in graphs, check the operational status of loggers, configure alarm notifications, and share data files - with no dedicated equipment beyond a mobile device or laptop.
Purchase an MX Data Plan to get more out of your data and access it from anywhere using the LI-COR Cloud software platform (formerly HOBOlink)! You can also purchase the MX Gateway station, which automatically sends your logger's data to LI-COR Cloud.
Features
- Bluetooth communication for wireless data offload
- 16-bit resolution for highly-accurate measurements
- Stores 1.9 million measurements for longer deployments between offloads
- New Self-Describing sensors with automatic configuration for fast deployment
- Compatible with existing sensors for a wide range of indoor monitoring
- Audible and visual LCD-screen alarms notify you if sensor becomes unplugged or a reading exceeds set thresholds
Specifications
Temperature Sensor (MX1104)
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-20° to 70°C-4° to 158°F
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±0.20°C from 0° to 50°C±0.36°F from 32° to 122°F
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0.002°C at 25°C0.004°F at 77°F
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<0.1°C (0.18°F) per year
Range
Accuracy
Resolution
Drift
RH Sensor* (MX1104)
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0% to 100% at -20° to 70°C (-4° to 158°F); exposure to conditions above 95% may temporarily increase the maximum RH sensor error by an additional 1%
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±2.5% from 10% to 90% (typical) to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% and above 90% ±5% typical
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0.01%
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<1% per year typical
Range
Accuracy
Resolution
Drift
Response Time (MX1104)
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11 minutes in air moving 1 m/s (2.2 mph)
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30 seconds to 90% in airflow of 1 m/s (2.2 mph)
Temperature
RH
Light Sensor (M1104)
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0 to 167,731 lux15,582 lum/ft2
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±10% typical for direct sunlight (see Light Measurement on page 4 for more details)
Range
Accuracy
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Logger with
Cable TypeSD-MA-420 or CABLE-4-20mA SD-VOLT-2.5 or CABLE-2.5-STEREO SD-VOLT-05 or CABLE-
ADAP5SD-VOLT-10 or CABLE-ADAP10 SD-VOLT-24 or CABLE-ADAP24 Measurement Range 0 to 20.1 mA 0 to 2.5 V 0 to 5.0 V 0 to 10 V 0 to 24 V Accuracy ±0.001 mA ±0.2% of reading ±0.1 mV ±0.1% of reading ±0.2 mV ±0.3% of reading ±0.4 mV ±0.3% of reading ±1.0 mV ±0.3% of reading Resolution 0.3 µA 40 µV 80 µV 160 µV 384 µV Logger
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-20° to 70°C-4° to 158°F
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1 mW0 dBm
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Approximately 30.5 m (100 ft) line-of-sight
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Bluetooth Low Energy (Bluetooth Smart)
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1 second to 18 hours
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Fixed interval (normal, statistics) or burst
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Wrap when full or stop when full
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Immediate, push button, date & time, or next interval
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When memory full, push button, date & time, or after a set logging period
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Push button
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±1 minute per month at 25°C77°F
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Two AAA 1.5 V alkaline batteries, user replaceable
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1 year, typical with logging interval of 1 minute and Bluetooth Always On enabled; 2 years, typical with logging interval of 1 minute and Bluetooth Always On disabled; and temperatures between 0° and 50°C (32° and 122°F). Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life.
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4 MB (1.9 million measurements, maximum)
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Approximately 4 to 15 minutes depending on the mobile device; may take longer the further the device is from the logger
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LCD is visible from 0° to 50°C (32° to 122°F); the LCD may react slowly or go blank in temperatures outside this range
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11.28 x 5.41 x 2.92 cm4.44 x 2.13 x 1.15 in.
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123 g4.34 oz
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IP54
Operating RangeRadio PowerTransmission RangeWireless Data StandardLogging RateLogging ModesMemory ModesStart ModesStop ModesRestart ModeTime AccuracyBattery TypeBattery LifeMemoryFull Memory Download TimeLCDSizeWeightEnvironmental Rating -
Compatible items
Communications
Compliance Certificates
NIST Setup & Certifications
Accessories
4-20 mA
AC Current
AC Voltage
Air Velocity
DC Amperage
DC Voltage
Differential Pressure
Gauge Pressure
Temperature
FAQs
The temperature sensor can measure temperatures ranging from -20° to 70°C (-4° to 158°F).
The accuracy is ±0.20°C from 0° to 50°C (±0.36°F from 32° to 122°F).
The resolution is 0.002°C at 25°C (0.004°F at 77°F).
The temperature sensor has a drift of less than 0.1°C (0.18°F) per year.
The relative humidity sensor can measure humidity from 0% to 100% at -20° to 70°C (-4° to 158°F). Exposure to conditions above 95% may temporarily increase the maximum relative humidity sensor error by an additional 1%.
The accuracy of the relative humidity sensor is:
±2.5% from 10% to 90% (typical) to a maximum of ±3.5% including hysteresis at 25°C (77°F)
Below 10% and above 90%, the accuracy is ±5% typical
The resolution of the relative humidity sensor is 0.01%.
The relative humidity sensor has a typical drift of less than 1% per year.
The typical response time to reach 90% in air moving at 1 m/s (2.2 mph) is 11 minutes.
The typical response time to reach 90% in airflow of 1 m/s (2.2 mph) is 30 seconds.
The light sensor can measure from 0 to 167,731 lux (15,582 lum/ft²).
The accuracy of the light sensor is ±10% typical for direct sunlight.
The logger operates within a temperature range of -20° to 70°C (-4° to 158°F).
The logger has a transmission range of approximately 30.5 meters (100 feet) line-of-sight.
The logger uses Bluetooth Low Energy (Bluetooth Smart) for wireless data transmission.
The logging rate can be set from 1 second to 18 hours.
The logging modes available are fixed interval (normal, statistics) or burst.
The memory modes are wrap when full or stop when full.
The start modes are immediate, push button, date & time, or next interval.
The stop modes are when memory is full, push button, date & time, or after a set logging period.
The time accuracy is ±1 minute per month at 25°C (77°F).
The logger uses two AAA 1.5 V alkaline batteries, which are user-replaceable
The battery life is typically 1 year with a logging interval of 1 minute and Bluetooth Always On enabled. It can last up to 2 years with Bluetooth Always On disabled and temperatures between 0° and 50°C (32° and 122°F). Faster logging intervals, burst logging, and frequent app use can reduce battery life.
The logger has 4 MB of memory, which can store up to 1.9 million measurements.
Downloading the full memory typically takes approximately 4 to 15 minutes depending on the mobile device. It may take longer if the device is farther from the logger.
The dimensions are 11.28 x 5.41 x 2.92 cm (4.44 x 2.13 x 1.15 inches), and it weighs 123 g (4.34 oz).
The logger has an IP54 environmental rating.
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