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HOBO Pendant MX Temp (MX2201) and Temp/Light (MX2202) Logger Manual 

1-800-LOGGERS 6 

www.onsetcomp.com 

password uses a proprietary encryption algorithm that changes 
with every connection. 

To set a password: 

1.

 

Tap Devices. Press the circle on the logger to wake it up (if 
necessary). Tap the logger in the app to connect to it. 

2.

 

Tap 

 

and then 

3.

 

Type a password and then tap Set. 

Only the phone or tablet used to set the password can then 
connect to the logger without entering a password; all other 
mobile devices will be required to enter the password. For 
example, if you set the password for the logger with your tablet 
and then try to connect to the device later with your phone, 
you will be required to enter the password on the phone but 
not with your tablet. Similarly, if others attempt to connect to 
the logger with different devices, then they would also be 
required to enter the password. To reset a password, press the 
circle on the logger for 10 seconds or connect to the logger and 

tap 

, then 

, and tap Reset. 

Reading Out the Logger 

To download data from the logger: 

1.

 

Tap Devices. Press the circle on the logger to wake it up (if 
necessary). Tap the logger in the app to connect to it. 

2.

 

Tap the logger in the app to connect to it and tap 

. The 

logger will read out the data to the phone or tablet. 

3.

 

Once the readout is complete, tap HOBO Files and select 

the file to view it. Tap 

 and then 

 to export and share 

the data. 

Data can also be uploaded automatically to HOBOlink, Onset’s 
web-based software, via the app or the MX gateway. For 
details, see the app user’s guide and see the HOBOlink help for 
details on working with data in HOBOlink. 

Logger Events 

The logger records the following events to track logger 
operation and status. You can view events in exported files or 
plot events in the app. 

To plot events, tap HOBO Files and select a file to open.  

Tap 

 and then tap 

. Select the events you want to plot 

and tap OK. 

Event Name 

Definition 

Host Connect 

The logger was connected to a mobile 
device. 

Started 

The logger started logging. 

Stopped 

The logger stopped logging. 

Chan <#> Alarm 
Tripped/Cleared 

An alarm has occurred because the 
reading was outside the alarm limits or 
back within range. 

Note:

 Although the 

reading may return to a normal range, an 
alarm cleared event will not be logged if 
the logger was set up to maintain alarms 
until reconfigured. 

Event Name 

Definition 

Button Up/Down 

The 

circle

 on the logger was pressed to 

wake it up/bring it to the top of the 
loggers list in the app. 

New Interval 

The logger has switched to logging at the 
burst logging rate or back to the normal 
rate. 

Power Warn 

The battery level dropped below 2.3 V. 

Safe Shutdown 

The battery level dropped below a safe 
operating voltage and performed a safe 
shutdown. 

Deploying and Mounting the Logger 

When mounting the logger, it is very important that the logger 
housing does not get distorted. If you are mounting the logger 
on an irregular surface, it is recommended that you use the 
mounting boot (BOOT-MX2201-2202). 

 

The logger must be mounted to a flat surface or in a way 
that prevents the logger housing from bowing. You can 
deploy the logger by using the two mounting tabs. Insert 
two screws through the round holes on the mounting 
tabs to affix the logger to a flat surface, being careful not 
to overtighten the screws. Alternatively, you can hang 
the logger using a loose zip tie loop. 

 

Guidelines for Using the Mounting Boot 

 

To install the logger in a boot, hold both the boot and the 
logger upside down and insert the logger mounting tab 
into the boot as shown. 

 

Insert the other logger mounting tab into the boot, 
making sure the logger is securely seated in the boot as 
shown. 

 

Use screws with 
the round holes 

Summary of Contents for MX2201

Page 1: ...7 oz positive Waterproof To 30 5 m 100 ft 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 Time Accuracy 1 minute per month at 25 C 77 F Battery CR2032 3V lithium user replaceable Battery Life 1 year typical at 25 C 77 F with logging interval of 1 minute and Bluetooth Al...

Page 2: ...ote The circle on the front of the logger represents the button area on the logger You will not feel an actual button push when you press that area this is normal Light Measurement MX2202 The logger measures light intensity in units of lumens ft2 or lux The light sensor in the MX2202 has a spectral response that tightly matches the photopic response of the human eye This is shown in Plot A The lig...

Page 3: ...connected to the device during the upgrade Configuring the Logger Use the app to set up the logger including selecting the logging interval start and stop logging options and configuring alarms These steps provide an overview of setting up the logger For complete details see the app user s guide 1 Tap Devices and then tap the logger to connect to it If the logger was configured with Bluetooth Alwa...

Page 4: ...he selected duration For example the high alarm is set to 85 F and the duration is set to 30 minutes then the alarm will only trip if all sensor readings are 85 F or above for a continuous 30 minute period 7 Tap Save and repeat steps 3 7 for the other sensor if desired Note that when both alarms are configured an alarm is raised when either sensor is in an alarm condition 8 In the configuration se...

Page 5: ...or each sensor The maximum or highest sampled value The minimum or lowest sampled value An average of all sampled values and The standard deviation from the average for all sampled values For example a Pendant MX Temp Light MX2202 logger is configured with both the temperature and light sensors enabled and the logging interval set to 5 minutes The logging mode is set to fixed interval logging with...

Page 6: ...nts in exported files or plot events in the app To plot events tap HOBO Files and select a file to open Tap and then tap Select the events you want to plot and tap OK Event Name Definition Host Connect The logger was connected to a mobile device Started The logger started logging Stopped The logger stopped logging Chan Alarm Tripped Cleared An alarm has occurred because the reading was outside the...

Page 7: ...X2202 logger is mounted horizontally so that the light sensor is pointing straight up towards the sky as shown in this example Be careful of solvents Check a materials compatibility chart against the wetted materials listed in the Specifications table before deploying the logger in locations where untested solvents are present The logger has an EPDM O ring which is sensitive to polar solvents acet...

Page 8: ...ace is completely covered in grease b Place the O ring on the cover and clean off any debris Make sure the O ring is fully seated and level in the groove and not pinched or twisted This is necessary to maintain a waterproof seal 5 Place the cover back on the logger as shown aligning the notches in the cover with the rounded tabs on the logger case The cover will not close properly and maintain a w...

Page 9: ...an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired...

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