Seven Divisions. One Team. Endless Possibilities.

There’s more to Sentry than what you see from the road. Behind our Watertown facilities and projects across the region are seven specialized divisions, each bringing unique skills, expertise, and solutions to the industries we serve.
From construction and manufacturing to technology and field services, here’s a closer look at what we do.
Seven Divisions. Seven Areas of Expertise.
General Contracting
Bringing projects together through planning, coordination, and construction management, from concept to completion.
Electrical
Powering commercial and industrial facilities through electrical installations, maintenance, and service.


Mechanical
Supporting the essential systems behind every building through plumbing, HVAC, piping, and mechanical installations.
Manufacturing
Transforming materials into finished products through steel fabrication, welding, and specialized manufacturing solutions.
South Dakota Service
Bringing skilled crews and specialized equipment to jobsites for structural steel erection, maintenance, and field services.
Controls & Automation
Connecting technology and industry through industrial controls, automation systems, and integrated solutions.
Workover
Supporting oil and gas operations with specialized equipment, experienced crews, and dedicated field services.


Different Specialties. One Sentry.
Each division brings something different to the table. Together, our teams combine craftsmanship, experience, and dedication to help customers tackle challenges and bring projects to life.
Whether it’s happening inside our facilities or out in the field, it’s our people who make the difference.
Seven divisions. One team. That’s Sentry.
Flexible. Innovative. Results.
Discover the people, services, and capabilities behind Sentry.