• We’ve taken the popular and proven Trillium 120QA technology, adding more utility to its already low self noise and outstanding broadband performance. The Trillium Horizon 120 is the first-ever instrument designed to ideally suit both direct bury and vault use cases. This lightweight, easy-to-deploy sensor can be direct buried at shallow depth or set on a pier. You’ll have access to all the benefits of direct bury (including better performance and lower logistical costs) while still having the option of a vault install.