TOMST Inc. — Direct U.S. sales
TOMST Inc. is the exclusive distributor of TOMST products in the United States.
TOMST devices are designed for long-term reliability, durability, and consistent data collection in real field conditions. The product philosophy comes from decades of building systems that must operate continuously with minimal maintenance in harsh conditions.
Products

TMS dataloggers measure soil moisture as well as air and soil temperature using three temperature sensors and one soil moisture sensor. With long battery life and large internal memory, they operate autonomously and require minimal maintenance in long-term field deployments.

A durable, autonomous thermologger based on the TMS datalogger design, built for air temperature monitoring across a wide range of conditions. Compact enough to be hung on trees, fixed to structures, buried in soil, or placed almost anywhere outdoors.

A potentiometer-based point dendrometer for precise automatic measurement of stem diameter changes with sub-μm resolution. It also measures air temperature through an integrated thermometer and is designed for long-term deployment in harsh outdoor conditions.
