HOBO® MX Temp/RH Data Logger (MX1101) Manual
17840-U
The HOBO MX Temp/RH data logger records and transmits temperature and relative humidity
(RH) in indoor environments with its integrated sensors. This Bluetooth® Low Energy (BLE)-
enabled logger is designed for wireless communication with a phone, tablet, or computer.
Using the HOBOconnect® app, you can easily configure the logger and then download logged
data to view or export for further analysis. The logger can calculate minimum, maximum,
average, and standard deviation statistics and can be configured to trip audible or visual alarms
at thresholds you specify. The logger also supports burst logging in which data is logged at a
different interval when sensor readings are above or below certain limits. This compact data
logger also has a built-in LCD screen to display the current temperature, relative humidity,
logging status, battery use, memory consumption, and more.
Specifications
Temperature Sensor
Range
-20° to 70°C (-4° to 158°F)
Accuracy
±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F), see Plot A
Resolution
0.024°C at 25°C (0.04°F at 77°F), see Plot A
Drift
<0.1°C (0.18°F) per year
RH Sensor*
Range
1% to 90% (non-condensing)
Accuracy
±2% from 20% to 80% typical to a maximum of ±4.5% including
hysteresis at 25°C (77°F); below 20% and above 80% ±6% typical
Resolution
0.01%
Drift
<1% per year typical
Response Time
Temperature
7:30 minutes in air moving 1 m/s (2.2 mph)
RH
20 seconds to 90% in airflow of 1 m/s (2.2 mph)
Logger
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)
Logger Operating Range
-20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing)
Logging Rate
1 second to 18 hours
Logging Modes
Fixed interval (normal, statistics) or burst
Memory Modes
Overwrite when full or stop when full
Start Modes
Immediate, push button, date and time, or next interval
Stop Modes
When memory is full, push button, date and time, or after a set
logging period
Restart Mode
Push button
Time Accuracy
±1 minute per month at 25°C (77°F), see Plot B
Battery Life
1 year, typical with logging interval of 1 minute. Faster logging and/or
statistics sampling intervals, entering burst logging mode, and
remaining connected with the app affects battery life. Excessive
readouts, audible alarms, and paging all affect battery life. Visual
alarms and other events can have a marginal effect on battery life.
Battery Type
Two AAA 1.5 V alkaline batteries, user replaceable
Memory
128 KB (84,650 measurements, maximum)
Full Memory Download Time
Approximately 60 seconds; may take longer the further the device is
from the logger
*Per RH sensor manufacturer data sheet
HOBO MX Temp/RH
Data Logger
Models: MX1101
MX1101-01 (Japan
and Korea)
Included Items:
•
Command™ strip
•
Double-sided tape
•
Hook & loop strap
•
Two AAA 1.5 V alkaline
batteries
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
