HOBO® MX Analog/Temp/RH/Light (MX1104) and
MX 4-Channel Analog (MX1105) Data Logger Manual
23968-H
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 (BLE) 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.
Specifications
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 (MX1104)
Range
0 to 167,731 lux (15,582 lum/ft
2
)
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)
HOBO MX1104 and
MX1105 Data Loggers
Models:
•
Analog/Temp/RH/Light
(MX1104)
•
4-Channel Analog
(MX1105)
Included Items:
•
Tie wraps
•
Two AAA 1.5 V alkaline
batteries (installed)
Required Items:
•
HOBOconnect app
•
Mobile device with
Bluetooth and iOS,
iPadOS®, or Android™, or a
Windows computer with a
native BLE adapter or
supported BLE dongle
MX1105 Model Shown
