Onset is a world leader in data loggers. Our Mission: To provide data logging products that help our customers assess the environment to make the world better.
Our award winning HOBO® data logger and weather station products are used around the world in a broad range of monitoring applications, from verifying the performance of green buildings and renewable energy systems to agricultural and coastal research.
Based on Cape Cod, Massachusetts, Onset has sold more than 2.5 million data loggers since the company’s founding in 1981. Onset has designed and manufactured its HOBO data loggers on-site at its headquarters on Cape Cod, Massachusetts for more than 30 years.
Introduced the HOBO RX3000 Remote Monitoring Station
Introduced the MX1101 Temp/RH logger for mobile devices
Introduced the UX100 Series Temperature/Relative Humidity data loggers
Introduced the HOBO U26 Dissolved Oxygen data logger
Introduced the UX90 Series Time-of-Use data loggers
Introduced the HOBO U24 Conductivity/Salinity data loggers
Developed the HOBOnode Series wireless sensors
Introduced the HOBO U30 web-based monitoring platform
Sold 1 millionth data logger
Developed HOBOware cross platform data logging software
Developed 15-channel modular energy monitoring system
Established market for mid-range, research-grade weather stations
Developed first optic data shuttle
Purchased 40,000 sq. ft facility
Developed first under - $100 temperature logger– The original HOBO
Ellen and Lon Hocker developed first low-power data logger in their Falmouth, Massachusetts barn