Onset HOBO Multi-Channel Data Loggers

The HOBO MX multi-channel data loggers measure and transmit data wirelessly from indoor environments to a mobile device or computer using Bluetooth Low Energy technology.

Features

  • External analog input for a variety of additional sensors
  • Optional self-describing sensors with automatic configuration
  • Connect via Bluetooth within 100 feet
Starting At $219.00
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The HOBO MX Analog/Temp/RH/Light (MX1104) and HOBO MX 4-Channel Analog (MX1105) data loggers measure and transmit data wirelessly from indoor environments to a mobile device or computer using Bluetooth Low Energy technology.

The MX1104 model has integrated temperature, relative humidity (RH), and light intensity sensors and one analog input while the MX1105 model has four analog inputs. Both models support a wide variety of external sensors (sold separately), including self-describing temperature, split-core AC current transformer, 4-20 mA input, and DC voltage input sensors.

The self-describing sensors are designed with integrated strain relief for a secure connection to the loggers and are automatically detected by the HOBOconnect app for easy setup. Using the app, you can configure the loggers, read out and view data, and export the data for further analysis. The loggers can calculate minimum, maximum, average, and standard deviation statistics and can also be configured to trip audible or visual alarms at thresholds you specify. In addition, both loggers support burst logging in which data is logged at a different interval when sensor readings are above or below certain limits.

These compact loggers also have built-in LCD screens to display current sensor readings, logging status, battery use, memory consumption, and more.

Temperature Sensor (MX1104)
Range -20° to 70°C (-4° to 158°F)
Accuracy ±0.20°C from 0° to 50°C (±0.36°F from 32° to 122°F)
Resolution 0.002°C at 25°C (0.004°F at 77°F)
Drift <0.1°C (0.18°F) per year
RH Sensor* (MX1104)
Range 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%
Accuracy ±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
Resolution 0.01%
Drift <1% per year typical
Response Time (MX1104)
Temperature 11 minutes in air moving 1 m/s (2.2 mph)
RH 30 seconds to 90% in airflow of 1 m/s (2.2 mph)
Light Sensor (M1104)
Range 0 to 167,731 lux (15,582 lum/ft2)
Accuracy ±10% typical for direct sunlight (see Light Measurement on page 4 for more details)
Logger with
Cable Type
SD-MA-420 or CABLE-4-20mA SD-VOLT-2.5 or CABLE-2.5-STEREO SD-VOLT-05 or CABLE-
ADAP5
SD-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
Operating Range -20° to 70°C (-4° 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
Restart Mode Push button
Time Accuracy ±1 minute per month at 25°C (77°F)
Battery Type Two AAA 1.5 V alkaline batteries, user replaceable
Battery Life 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.
Memory 4 MB (1.9 million measurements, maximum)
Full Memory Download Time Approximately 4 to 15 minutes depending on the mobile device; may take longer the further the device is from the logger
LCD 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
Size 11.28 x 5.41 x 2.92 cm (4.44 x 2.13 x 1.15 in.)
Weight 123 g (4.34 oz)
Environmental Rating IP54
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Onset HOBO Multi-Channel Data Loggers
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