HOBO MX2303 Wireless Temperature Data Logger with Two External Sensors - Optional Remote Monitoring
- In stock, only 4 left
- Available to order
This data logger from Onset is designed to withstand harsh indoor/outdoor conditions. View current data in real time with the free HOBOconnect app.
Communications
Access your data directly from your mobile phone, tablet or Windows computer when within 100 foot (30 m) line-of-sight range of the logger, with the free HOBOconnect app.
To enable cloud data storage and analysis, add an MX Data Plan (select from the options above).
To enable near real-time remote monitoring and alerts via email or text message, add an MX Data Plan and an MX Gateway (select from the options above). Note: the MX Gateway must be indoors.
You can download the HOBOconnect app here:
| Power | Battery only |
|---|---|
| Batteries (Outdoor Unit) | 2/3 AA 3.6 Volt lithium, user replaceable |
| HOBO Product Series | MX2300 |
| Measurements | Temperature |
| Data Available By | Online, Mobile App, WiFi, Email, Ethernet, Wireless (Bluetooth/RF) |
Specifications
Temperature Sensor |
|
Range |
MX2303 and MX2304 external sensors: -40 to 100°C (-40 to 212°F), with tip and cable immersion in fresh water up to 50°C (122°F) for one year |
Accuracy |
±0.25°C from -40 to 0°C (±0.45 from -40 to 32°F); ±0.2°C from 0 to 70°C (±0.36 from 32 to 158°F); ±0.25°C from 70 to 100°C (±0.45 from 158 to 212°F), MX2303 and MX2304 only |
Resolution |
MX2303, MX2304, and MX2305: 0.04°C (0.072°F) |
Drift |
<0.01°C (0.018°F) per year |
Response Time (typical, to 90% of change) — Temperature |
|
MX2303/MX2304 external sensors; Without Solar Radiation Shield |
3 minutes in air moving 1 m/sec; 20 seconds in stirred water |
MX2303/MX2304 external sensors; With RS1/M-RSA Solar Radiation Shield |
7 minutes in air moving 1 m/sec |
MX2303/MX2304 external sensors; With RS3-B Solar Radiation Shield |
4 minutes in air moving 1 m/sec |
Specifications (continued) — Logger |
|
Operating Range |
-40° to 70°C (-40° to 158°F) |
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 |
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 |
Time Accuracy |
±1 minute per month 0° to 50°C (32° to 122°F) |
Battery Type |
2/3 AA 3.6 Volt lithium, user replaceable |
Battery Life |
2 years, typical with logging interval of 1 minute and Bluetooth Always On enabled; 5 years, typical with logging interval of 1 minute and Bluetooth Always On disabled. Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life. |
Memory |
MX2303, MX2304, and MX2305: 128 KB (84,650 measurements, maximum) |
Full Memory Download Time |
Approximately 60 seconds; may take longer the further the device is from the logger |
Dimensions |
Logger housing: 10.8 x 5.08 x 2.24 cm (4.25 x 2.0 x 0.88 in.); External temperature sensor diameter: 0.53 cm (0.21 in.); External temperature/RH sensor diameter: 1.17 cm (0.46 in.); External sensor cable length: 2 m (6.56 ft); Solar radiation shield bracket: 10.8 x 8.3 cm (4.25 X 3.25 in.) |
Weight |
Logger: 75.5 g (2.66 oz); Solar radiation shield bracket: 20.4 g (0.72 oz) |
Materials |
Acetal, silicone gasket, stainless steel screws |
Environmental Rating |
NEMA 6 and IP67 |
Full details are in the datasheet and manual under Resources & Downloads.
- HOBO MX2303 2 Ext Temp Data Logger
- Screws
- Cable ties
This item is priced on application. Tell us what you need and we'll send you a quote.
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Key Features
- Convenient wireless setup and data download via Bluetooth Low Energy
- View current data in real time with the free HOBOconnect app
- Receive alert notifications for out-of-range conditions on the data logger and app
- Retrieve data in hard-to-reach locations
- Compact, weatherproof housing with built-in mounting system
- Share downloaded data easily from your mobile device
- Accuracy: +/- 0.2C°.
Requires a compatible mobile device or Windows computer and the HOBOconnect app.
- 5 stars: 1 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
I have used the logger to monitor pipe flow and return temperatures
Easy to set up and operate
The bluetooth app works well downloading data and presenting the dat/exporting in excel



