HOBO-MX1104

HOBO MX BLE Analog, Temp, RH, & Light Logger

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Simultaneously logs temperature, humidity, and light intensity
Fourth logging channel with process current/voltage input to support external sensor
Bluetooth Low Energy (BLE) 100-foot communications
16-bit resolution for highly accurate measurements

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HOBO-MX1104

From ^$ 291.99

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1 Variations available

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Data Sheet

Product Overview

Accuracy Detail Temperature Sensor Accuracy: ± 0.20°C from 0° to 50°C (± 0.36°F from 32° to 122°F), Current Accuracy: ± 0.001 mA ± 0.2% of reading, Voltage Accuracy: 0 to 24 V: ± 1.0 mV ± 0.3% of reading, 0 to 2.5 V: ± 0.1 mV ± 0.1% of reading, 0 to 5 V: ± 0.2 mV ± 0.3% of reading, 0 to 10 V: ± 0.4 mV ± 0.3% of reading, RH: ± 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
Approvals CE
Battery life 1 yr, typical with reading interval of 1 min
Battery Size and Type Alkaline AAA
Configuration HOBOmobile® app Android, iOS, iPadOS
Current Accuracy ± 0.001 mA
Current Measurement Range 0 to 20.1 mA
Current Resolution Temperature: 0.002°C, Relative Humidity: 0.01%, Voltage: 384 µV, Current: 0.3 µA
Data Interface Bluetooth
Display LCD
Display Note 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
Enclosure Ratings IP54
Form factor Magnetic Surface or Insert the tie wraps
Form Factor Note Use the four magnets on the back of the logger to mount it to a magnetic surface or insert the tie wraps through the mounting loops to attach it to other surfaces
Height 1.15 in
Input Type Internal, External
Length 2.13 in
Light Accuracy ± 10%
Light Measurement Range 0 to 167,731 lux
Logger with Cable Type "Current: SD-MA-420 or CABLE-4-20mA Voltage: 0 to 24 V: SD-VOLT-24 or CABLE-ADAP24 0 to 2.5 V: SD-VOLT-2.5 or CABLE-2.5-STEREO 0 to 5 V: SD-VOLT-05 or CABLE-ADAP5 0 to 10 V: SD-VOLT-10 or CABLE-ADAP10"
Logging Modes burst, Fixed interval
Measurement Type Current, Light Intensity, Relative Humidity, Temperature, Voltage
Memory 4 MB
Memory Modes stop when full, Wrap when full
Memory Note Approximately 4 to 15 minutes depending on the mobile device; may take longer the further the device is from the logger
Operating Temperature, Max 70 °C
Operating Temperature, Min -20 °C
Radio Power 1 mW
Relative Humidity Accuracy ± 2.5% RH
Resistance Resolution Temperature: 0.002°C, Relative Humidity: 0.01%, Voltage: 384 µV, Current: 0.3 µA
Resolution Note Temperature Sensor Resolution: 0.002°C at 25°C
Response Time Temperature: 11 Min, RH: 30 sec
Response Time Note Temperature: 11 Minutes in air moving 1 m/s, RH: 30 seconds to 90% in airflow of 1 m/s
Restart Mode Push button
RH Measurement Range 0 to 100% RH
RH Resolution 0.0001
RH Sensor Drift <1% Per Year
Samples,Max ~1.9M Samples, Interval Selectable 1 sec to 18hrs
Series ID HOBO-MX1104
Start Modes At set date and time, Button Push, Immediate Start, Next Interval
Stop Modes Button Push, When Memory is Full, At set date and time, At set Duration
Supply Power Type Battery
Temperature Accuracy ± 0.20°C
Temperature Resolution 0.002 °C
Temperature Sensor Drift < 0.1°C Per Year
Time Accuracy ± 1 minute/month at 25°C
Transmission Range 30.5 m
Voltage Accuracy ± 1.0 mV
Voltage Measurement Range 0 to 2.5 V, 0 to 5.0 V. 0 to 10 V, 0 to 24 V
Voltage Resolution 384 µV
Weight 4.34 oz
Width 4.44 in

Supported Applications

The HOBO MX1104 is a multi-channel, Bluetooth Low Energy (BLE) data logger that measures and wirelessly transmits temperature, relative humidity, and light intensity, plus an external analog input for attaching a wide variety of additional sensors. Being self-contained and wireless, it lets you use a mobile device and Onset's free HOBOconnect app to access data at any time, over a 100-foot range via Bluetooth Low Energy.

This four-parameter capability makes the MX1104 well suited to building science and energy studies, greenhouse and agricultural monitoring, cold-chain and storage checks, and general environmental research where temperature, humidity, and light must be tracked together. The analog channel extends its reach to current- and voltage-output sensors, so a single logger can capture a custom mix of measurements.

With an IP54-rated enclosure and user-replaceable batteries, the MX1104 is built for extended deployments indoors or in protected outdoor locations, and it is CE and FCC marked.

Operating Conditions & Performance

The logger operates across -20° to 70°C (-4° to 158°F) and delivers high measurement accuracy on each channel:

Temperature: ±0.20°C from 0° to 50°C (±0.36°F from 32° to 122°F), with 0.002°C resolution at 25°C (0.004°F at 77°F)
Relative humidity: ±2.5% from 10% to 90% to a maximum of ±3.5% including hysteresis at 25°C (77°F); ±5% below 10% and above 90%, at 0.01% resolution
Light intensity: 0 to 167,731 lux (15,582 lum/ft2), ±10% for direct sunlight

Temperature response is rated at 30 seconds to 90% in airflow of 1 m/s (2.2 mph). The unit runs on two AAA 1.5 V alkaline batteries (user replaceable), weighs 123 g (4.34 oz), and measures 11.28 x 5.41 x 2.92 cm (4.44 x 2.13 x 1.15 in.).

Configuration Options

Although offered as a single logger, the MX1104's external analog input is what adapts it to different sensors. The channel can be configured for a specific current or voltage span, each paired with its own input cable, so the same logger can read a 4-20 mA transmitter one day and a voltage-output probe the next. Supported analog ranges and their accuracies are:

0 to 20.1 mA: ±0.001 mA ±0.2% of reading
0 to 2.5 V: ±0.1 mV ±0.1% of reading
0 to 5.0 V: ±0.2 mV ±0.3% of reading
0 to 10 V: ±0.4 mV ±0.3% of reading
0 to 24 V: ±1.0 mV ±0.3% of reading

The built-in temperature, humidity, and light channels are always available, while the analog channel is matched to the application by selecting the appropriate range and cable.