--- product_id: 15061727 title: "HOBO by Onset MX1101 - Temperature/Relative Humidity Data Logger" brand: "onset" price: "£156.98" currency: GBP in_stock: true reviews_count: 8 category: "Onset" url: https://www.desertcart.co.uk/products/15061727-hobo-by-onset-mx1101-temperature-relative-humidity-data-logger store_origin: GB region: United Kingdom --- # 84,650 measurements storage 100-ft Bluetooth range ±0.21°C accuracy HOBO by Onset MX1101 - Temperature/Relative Humidity Data Logger **Brand:** onset **Price:** £156.98 **Availability:** ✅ In Stock ## Summary > 📊 Stay ahead of the curve with HOBO MX1101 — your wireless climate watchdog! ## Quick Answers - **What is this?** HOBO by Onset MX1101 - Temperature/Relative Humidity Data Logger by onset - **How much does it cost?** £156.98 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/15061727-hobo-by-onset-mx1101-temperature-relative-humidity-data-logger) ## Best For - onset enthusiasts ## Why This Product - Trusted onset brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Massive Data Capacity:** Stores up to 84,650 readings, enabling long-term monitoring without constant data downloads. - • **Instant Visual Feedback:** Built-in LCD screen displays real-time temperature, humidity, battery, and logging status at a glance. - • **Precision You Can Trust:** Accurately measures temperature from -20°C to 70°C with ±0.21°C precision for reliable environmental insights. - • **Seamless Wireless Access:** Bluetooth Low Energy connectivity lets you monitor data remotely up to 100 feet—no extra gear needed. - • **Smart Alerts & Analytics:** Customizable alarms and advanced stats via HOBOmobile app keep you ahead of critical environmental changes. ## Overview The HOBO MX1101 by Onset is a compact, CE-approved temperature and relative humidity data logger designed for professional-grade environmental monitoring. It offers precise measurements within -20°C to 70°C and 1% to 90% humidity ranges, with ±0.21°C and ±2% accuracy respectively. Featuring Bluetooth Low Energy technology, it enables wireless data access up to 100 feet via the HOBOmobile app, which supports real-time monitoring, customizable alarms, and data sharing. With 128 KB memory storing up to 84,650 measurements and a user-replaceable battery lasting up to a year, this device is ideal for continuous, hassle-free monitoring in industrial, scientific, or facility management settings. ## Description Onset’s HOBO MX1101 data logger measures and transmits temperature and relative humidity data wirelessly to mobile devices via Bluetooth Low Energy (BLE) technology. The self-contained wireless data logger, which works with Onset’s HOBOmobile app for logger setup and data management, enables you to access data anytime from mobile device for iOS or Android over a 100-foot range, and it requires no dedicated equipment beyond a mobile device for configuring the logger or reading out data. With Onset’s HOBOmobile app, you can view data in graphs, check the operational status of loggers, configure alarm notifications, and share data files. The logger can calculate minimum, maximum, average, and standard deviation statistics and be configured to trip audible or visual alarms at thresholds you specify. The MX1101 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: Range: -20 to 70C (-4 to 158F), Accuracy: +/-0.21C from 0 to 50C (+/-0.38F from 32 to 122F). Relative Humidity: Range: 1 pct to 90 pct (non-condensing), Accuracy: +/-2 pct from 20 pct to 80 pct typical to a maximum of +/-4.5 pct including hysteresis at 25C (77F); below 20 pct and above 80 pct +/-6 pct typical. Memory: 128 KB (84,650 measurements, maximum). Battery Life: 1 year, typical with logging interval of 1 minute. Battery Type: Two AAA 1.5 V alkaline batteries, user replaceable. LCD: Visible from 0 to 50C (32 to 122F); the LCD may react slowly or go blank in temperatures outside this range. Size: 3.66 x 8.48 x 2.29 centimeters (1.44 x 3.34 x 0.9 inches.). Weight: 56 gram (1.98 ounce). Environmental Rating: IP50. CE-Approved. Made in USA. Review: High Storage Capacity, Good Bluetooth Range - I installed this in a server room rack to collect temperature and RH data. As the room is in a locked room behind keycard access control, I really wanted to be able to walk by and collect my data without having to enter the space. I've found that I can easily collect data over bluetooth to my smartphone through the door and walls at a distance of about 50 feet. In fact, there is a little bench down the hall where I can sit and grab my readings. So far, I've been collecting continuous data since May 25th (just over 1 month) and the datalogger memory is still not full (T, RH, Max, Min). The graphs produced are very nice and readable - suitable for presentation, and raw data can be downloaded in CSV and other useful formats. Share to SMS, email, etc. with a click. I have been very impressed with this unit's usability and data retention. Battery life is also excellent. The user app is top notch and easy to use. I have checked accuracy by placing this little logger into another server room with an expensive, dedicated monitoring unit and found excellent agreement between temp and RH values. Thus far, I have no criticisms of this logger. Excellent performance for the price. Review: Useful Tool for the Diagnosis Toolbox - Great little data logger. Connect with BlueTooth using your phone. Does not connect to wifi. Seems to work within 20 feet or so, great for stuffing in an attic and reading remotely without climbing up. I used it to test how moist and area of my basement got after spraying some foam on the walls. I determined it's safe for storage now. Now I've proven I need to fix the ventilation in my garage as it's too moist. The batteries have lasted for 4 months now, I don't think they're down a bar yet. Nice little tool. ## Features - Measures -20° C to 70° C with accuracy of ±0.21° C in standard conditions - Records 1% to 90% relative humidity with ±2% typical accuracy in normal range - 128 KB storage holds up to 84,650 measurements for extended monitoring - Built-in LCD screen shows current readings, battery status, and logging information - Bluetooth Low Energy technology enables data access within 100-foot range ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00VTQFFR2 | | Best Sellers Rank | #50,376 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Industrial Data Loggers | | Brand | Onset | | Brand Name | Onset | | Customer Reviews | 4.4 out of 5 stars 99 Reviews | | Included Components | MX1101 | | Item Length | 8.48 Centimeters | | Item Weight | 0.18 Pounds | | Manufacturer | Onset HOBO | | Model | MX1101 | | Model Name | MX1101 | | Number of Batteries | 1 AAA batteries required. | | Part Number | MX1101 | | Power Source | See Product Details | | Response Time | 1 seconds | | Smart Home Compatibility | Smart Home Compatible | | Specification Met | RoHS | | Style Name | Foldable UV/White Beam | | UPC | 638267617121 | | Unit Count | 1.0 Count | | Upper Temperature Range | 158 Degrees Fahrenheit | ## Product Details - **Battery Description:** Alkaline - **Brand:** Onset - **Item Weight:** 2.88 ounces - **Mounting Type:** Tabletop - **Product Dimensions:** 3.34"W x 1.44"H ## Images ![HOBO by Onset MX1101 - Temperature/Relative Humidity Data Logger - Image 1](https://m.media-amazon.com/images/I/612UBYAD3QL.jpg) ![HOBO by Onset MX1101 - Temperature/Relative Humidity Data Logger - Image 2](https://m.media-amazon.com/images/I/61qouRN7PbL.jpg) ![HOBO by Onset MX1101 - Temperature/Relative Humidity Data Logger - Image 3](https://m.media-amazon.com/images/I/71VLlwJ42EL.jpg) ![HOBO by Onset MX1101 - Temperature/Relative Humidity Data Logger - Image 4](https://m.media-amazon.com/images/I/61nGqzHqrGL.jpg) ## Questions & Answers **Q: How accurate is the temp and humidity sensor?** A: It is very accurate. **Q: Is this work in -40F Freezer** A: No, it will not work. The specified temperature range for the MX1101 logger is -20° to 70°C (-4° to 158°F). I would recommend using the UX100-014M logger with a thermocouple probe. The logger would be mounted on the outside of the freezer and only the thermocouple wire would be fed into the freezer itself. Please let me know how I can further assist you. **Q: Can the collected data be utalized by the Hoboware soft ware also??** A: You will need to download and install the HOBOmobile app in order to connect to and work with the MX1101 logger. However, you can export your data files as a HOBOware file with data, logger events, and details, includinginformation about the file and each data series. You can then mail or copy the file and open it in HOBOware. **Q: Can multiple units be used and bluetooth accessed separately in the same room to monitor conditions at different heights?** A: Hello Sean,Yes. You can configure the units and name them accordingly for your preferences. See the quick setup guide here: http://www.onsetcomp.com/files/manual_pdfs/17839-F%20MAN-QSG-MX1101-web.pdf and the user manual here: http://www.onsetcomp.com/files/manual_pdfs/17840-N%20MX1101%20Manual.pdf InspectorTools Customer Service ## Customer Reviews ### ⭐⭐⭐⭐⭐ High Storage Capacity, Good Bluetooth Range *by C***D on June 22, 2016* I installed this in a server room rack to collect temperature and RH data. As the room is in a locked room behind keycard access control, I really wanted to be able to walk by and collect my data without having to enter the space. I've found that I can easily collect data over bluetooth to my smartphone through the door and walls at a distance of about 50 feet. In fact, there is a little bench down the hall where I can sit and grab my readings. So far, I've been collecting continuous data since May 25th (just over 1 month) and the datalogger memory is still not full (T, RH, Max, Min). The graphs produced are very nice and readable - suitable for presentation, and raw data can be downloaded in CSV and other useful formats. Share to SMS, email, etc. with a click. I have been very impressed with this unit's usability and data retention. Battery life is also excellent. The user app is top notch and easy to use. I have checked accuracy by placing this little logger into another server room with an expensive, dedicated monitoring unit and found excellent agreement between temp and RH values. Thus far, I have no criticisms of this logger. Excellent performance for the price. ### ⭐⭐⭐⭐⭐ Useful Tool for the Diagnosis Toolbox *by N***S on March 12, 2016* Great little data logger. Connect with BlueTooth using your phone. Does not connect to wifi. Seems to work within 20 feet or so, great for stuffing in an attic and reading remotely without climbing up. I used it to test how moist and area of my basement got after spraying some foam on the walls. I determined it's safe for storage now. Now I've proven I need to fix the ventilation in my garage as it's too moist. The batteries have lasted for 4 months now, I don't think they're down a bar yet. Nice little tool. ### ⭐⭐⭐⭐⭐ nice product: useful data, easy to set up & use *by J***Y on October 20, 2015* Wonderful device. Easy & convenient to use. Made the diagnosis of an intermittently failing refrigerator very clear. If they were a little less expensive, I would buy one for each of a number of appliances I would like to be able to more easily monitor. ## Frequently Bought Together - HOBO by Onset MX1101 - Temperature/Relative Humidity Data Logger - Fluke 62 Max Industrial Infrared Thermometer, -22 to +932 Degree F Range, Single Laser Targeting, 10:1 Distance To Spot Ratio, IP54 Rating, Includes 3 Year Warranty, (Not For Human Temp) - Fluke 971 Temperature Humidity Meter --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/15061727-hobo-by-onset-mx1101-temperature-relative-humidity-data-logger](https://www.desertcart.co.uk/products/15061727-hobo-by-onset-mx1101-temperature-relative-humidity-data-logger) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-04*