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Onset Manuals & User Guides

Onset is a global leader in data logger and monitoring solutions, best known for its HOBO and InTemp product lines used in environmental and cold chain monitoring.

Tip: include the full model number printed on your Onset label for the best match.

About Onset manuals on Manuals.plus

Onset Computer Corporation is a market leader in the design and manufacture of data loggers and monitoring controllers. Based in Bourne, Massachusetts, Onset provides the widely used HOBO® and InTemp® data logger families, which are essential tools for a broad range of applications including building performance monitoring, renewable energy, agricultural research, and water quality management.

Their products are designed to reliably measure and record parameters such as temperature, humidity, light, energy, and soil moisture in both indoor and outdoor environments, helping professionals make data-driven decisions.

Onset manuals

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HOBO MX2502 MX Underwater PAR Data Logger User Manual

15 Juli 2026
HOBO® MX Underwater PAR Data Logger (MX2502) Manual MX2502 MX Underwater PAR Data Logger The HOBO MX2502 PAR/Temp/Tilt Data Logger measures underwater photosynthetically active radiation (PAR), temperature, and tilt in…

HOBO MX801 Series Logger Perumahan-2 Guide pamaké

9 Séptémber 2025
Spésifikasi Perumahan Logger HOBO MX801 Séri-2 Bahan: PVC, Baja tahan karat, Pin Clevis kalayan kawat retainer, Karét Buna-N O-ring Beurat: 415 g (0.91 lb.) Diménsi: 26.2 cm x 7.1 cm (10.3…

HOBO MX800 Multiparameter Cai Data Loggers Guide pamaké

Pébruari 11, 2025
Pituduh Pangguna HOBO MX800 Multiparameter Water Quality Data Loggers Kasus Pamakéan: Ningkatkeun Pemantauan Kualitas Cai Suku: Data Anu Langkung Jelas, Cai Anu Langkung Bersih! Masalah Métode pemantauan cai anu teu cekap pikeun ngukur dampak lingkungan A…

HOBO MX20L Cai Level Logger Guide pamaké

12 Januari 2025
Inpormasi Produk Alat Pancatat Tingkat Cai HOBO MX20L Produk: Alat Pancatat Tingkat Cai HOBO MX20L Modél: MX20L-01 Barang anu Dibutuhkeun: Bluetooth sareng iOS, atanapi AndroidTM, atanapi komputer Windows nganggo Spésifikasi Bluetooth Tekanan…

HOBO MX20L-01 Cai Level Logger Guide pamaké

4 Januari 2025
Inpormasi Produk HOBO MX20L-01 Water Level Logger Modél: HOBO Water Level Logger Pangukuran Tekanan sareng Tingkat Cai: MX20L-01 Rentang Operasi: 0 dugi ka 207 kPa (0 dugi ka 30 psia); sakitar 0…

HOBO UA-002-64 Manual Pamilik Data Logger Cahaya

11 Nopémber 2024
HOBO UA-002-64 Light Data Logger Pitunjuk Panggunaan Produk Pamasangan/Pamasangan Réspon Sensor Cahaya sacara kasar gumantung kana kosinus sareng sudut ti vertikal. Ku kituna, naha di luar atanapi di jero cai, logger kedah…

HOBO MX1101 MX Temp RH Data Logger Manual Pamilik

3 Oktober 2024
Spésifikasi HOBO MX1101 MX Temp RH Data Logger Modél: HOBO MX Temp/RH Data Logger Modél: MX1101, MX1101-01 (Jepang sareng Koréa) Pitunjuk Panggunaan Produk Neundeun Data Logger Neundeun data…

HOBO MX20L Cai Level Logger Guide pamaké

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Comprehensive user guide for the HOBO MX20L Water Level Logger. Includes specifications, deployment instructions, data download procedures, and maintenance guidelines for models MX20L-01, MX20L-02, and MX20L-04.

HOBO MX20L Cai Level Logger Guide pamaké

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Comprehensive user guide for the HOBO MX20L Water Level Logger, covering specifications, deployment instructions, data management, and maintenance for accurate water level monitoring.

Onset manuals from online retailers

Onset HOBO H21-USB Micro Station Data Logger User Manual

H21-USB • April 10, 2026
This comprehensive user manual provides detailed instructions for the Onset HOBO H21-USB Micro Station Data Logger, covering product overview, setup, operation, maintenance, troubleshooting, and technical specifications for effective…

Onset HOBO UX100-003 Humidity Data Logger User Manual

UX100-003 • September 11, 2025
Comprehensive user manual for the Onset HOBO UX100-003 Humidity Data Logger, covering setup, operation, maintenance, troubleshooting, and detailed specifications for accurate temperature and humidity monitoring.

HOBO U20L-04 Water Level Data Logger User Manual

U20L-04 • July 14, 2025
Comprehensive user manual for the Onset HOBO U20L-04 Water Level Data Logger. Includes setup, operation, maintenance, troubleshooting, and specifications for accurate water level monitoring.

Onset video guides

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Onset support FAQ

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  • How do I connect to my HOBO MX series logger?

    Download the HOBOconnect app (formerly HOBOmobile) on your iOS or Android device. Enable Bluetooth, ensure the logger is awake (press the button if needed), and tap the logger in the app's 'In Range' list to connect.

  • What requires the HOBOware software?

    HOBOware is generally required for launching and reading out data from Onset's USB-based data loggers. The software is available for download on the Onset websitus.

  • How do I change the batteries in my HOBO data logger?

    For most pendant or compact loggers, open the battery compartment (often by unscrewing an end cap or removing a back plate), remove the old batteries, and insert new ones observing the polarity. Ensure o-rings are free of debris before resealing to maintain water resistance.

  • How do I reset the password on a HOBO MX logger?

    On compatible MX loggers, press both the Start/Stop button and the Alarm/Stats button simultaneously for 3 seconds to reset the password.

  • Can Onset loggers be used underwater?

    Many HOBO loggers, such as the U20 Water Level or Pendant series, are waterproof and designed for underwater deployment. However, models like the MX1101 are for indoor use only. Always check the environmental rating (IP rating) in your manual.