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.