
Kohler SB-616 Shutdown Test Box
Purpose-built test box for Kohler generator shutdown verification, including oil-pressure and coolant-temperature testing required under SB-616.
Colvin Labs™ designs, prototypes and manufactures specialized tools, electronic hardware and mechanical components for applications where an off-the-shelf product does not quite exist.
Colvin Labs™ products grow directly out of practical shop, equipment and automation needs.

Purpose-built test box for Kohler generator shutdown verification, including oil-pressure and coolant-temperature testing required under SB-616.

Centralized power for up to six AMS units from one clean AC-powered installation.

A compact 3D-printed stand that turns a wall-mounted Shelly display into a clean freestanding desk or tabletop control panel.

A field-ready communication and diagnostic cable kit with common USB, serial, RS485 and service accessories in a branded Colvin Labs™ pouch.
CAD development, component layout, fixtures, enclosures and manufacturability refinement.
Small precision components, prototype parts and short-run machining workflows.
Rapid iteration, functional enclosures, brackets, fixtures and production-ready printed parts.
Purpose-built wiring, connectors, controls and compact equipment assemblies.
Practical testing, revision and refinement before committing to a repeatable design.
Low-volume products assembled and validated in-house for specialized applications.
Colvin Labs™ develops products by starting with a real problem, building the hardware needed to solve it, testing it in actual use, and refining the design until it becomes repeatable.