Onset HOBO MX Temperature Data Logger
Features
- Set up and offload loggers wirelessly from your mobile device or Windows computer
- Splash-proof design enables use in damp environments and spray-down applications
- Visual alarms on the logger display and mobile app keep you notified of problems
- Expedited repair and warranty service
- Lifetime technical support
- More
Image | Part# | Product Description | Price | Stock | Order | |
---|---|---|---|---|---|---|
![]() | MX100 | HOBO MX temperature data logger | $49.00 | Check Availability |

Image | Part# | Product Description | Price | Stock | Order | |
---|---|---|---|---|---|---|
![]() | NIST-TEMP-POINT | NIST standard temperature point certification | $45.00 | Check Availability | ||
![]() | COMPLIANCE_CERT | Compliance certification | $25.00 | Check Availability |

Onset's HOBO MX100 is a low-cost, splash-proof, Bluetooth-enabled data logger that measures and transmits temperature data wirelessly to mobile devices or Windows computers.
Ideal for a range of indoor monitoring applications, this self-contained wireless data logger lets you configure it and access temperature data at any time when within a 100-foot range, with no dedicated equipment beyond a mobile device or Windows computer running the HOBOconnect app.
Onset's free HOBOconnect app makes it fast and easy to view temperature graphs, check the operational status of MX100 loggers, configure alarm notifications, and share data files.
The HOBO MX100 data logger requires a compatible mobile device or Windows computer running the HOBOconnect app.
Temperature Sensor |
|
Range |
-30° to 70°C (-22° to 158°F) |
Accuracy |
±1.0°C from -30° to -5°C (±1.8°F from -22° to 23°F) |
Resolution |
0.04°C (0.072°F) |
Drift |
<0.01°C (0.018°F) per year |
Response Time |
6 minutes typical to 90% in open air moving 1 m/s, unmounted |
Logger |
|
Logger Operating Range |
-30° to 70°C (-22° to 158°F) |
Radio Power |
1 mW (0 dBm) |
Transmission Range |
Approximately 30.5 m (100 ft) line-of-sight |
Wireless Data Standard |
Bluetooth Smart (Bluetooth Low Energy) |
Logging Rate |
1 second to 18 hours |
Time Accuracy |
± 1 minute per month at 25°C (77°F) |
Battery |
CR2450 3V lithium, not replaceable |
Battery Life |
1 year, typical with logging interval of 1 minute and Power Saving Mode disabled; 2 years, typical with logging interval of 1 minute and Power Saving Mode enabled. Faster logging intervals, remaining connected with the app, excessive downloads, and paging may impact battery life. |
Memory |
30,000 Measurements |
Full Memory Download Time |
Approximately 30 seconds; may take longer the farther the device is from the logger |
Dimensions |
6.9 x 4.5 x 1.1 cm (2.71 x 1.76 x 0.42 inches) |
Weight |
25.5 g (0.90 oz) |
Environmental Rating |
IP67 |
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