HOBO MX Analog/Temp/RH/Light (MX1104) and MX 4-Channel Analog (MX1105) Manual
1-508-759-9500 (U.S. and International) 2
www.onsetcomp.com
1-800-LOGGERS (U.S. only)
Specifications (continued)
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
The CE Marking identifies this product as complying with all relevant
directives in the European Union (EU).
See last page
*Per RH sensor manufacturer data sheet
Logger Components and Operation
RH Sensor:
This sensor is located in the upper left corner and to
the left of the LCD screen in the MX1104 model.
Light Sensor:
This sensor is located below the RH sensor and to
the left of the LCD screen in the MX1104 model.
Temperature Sensor:
This sensor is located in the bottom left
corner and to the left of the LCD screen in the MX1104 model.
A small pipe protrudes from the bottom side of the logger case
to vent the temperature sensor.
Analog Sensor Port:
Use this 2.5 mm jack to connect a self-
describing sensor or other analog sensor. The MX1104 model
has one port and the MX1105 model has four ports.
Top Button:
Press this button for 3 seconds to start or stop
logging data, or to resume logging on the next even logging
interval. This requires configuring the logger in the app with a
push button start or stop, and with Allow Button Restart
selected (see
Configuring the Logger
).
MX1104 Model
Analog Sensor
Port
Bottom
Button
Top Button
Light Sensor
Temperature
Sensor (internal)
and Venting Pipe
Mounting
Loop
Self-Describing Sensor
Plug
LCD Screen
MX1105 Model
RH Sensor
