Whelen. Trusted to Perform
for over 65 Years

Whelen Engineering –a global leader in the emergency warning industry –has been trusted to perform since 1952.

Whelen designs and manufactures reliable and powerful warning lights, white illumination lighting, sirens, controllers, and high-powered warning systems for Automotive, Aviation (Whelen Aerospace Technologies – WAT), and Mass Notification industries worldwide.

Founded in 1952 by George W Whelen in his garage in Deep River, Connecticut, USA, Whelen now encompasses three state-of-the-art facilities in Connecticut and New Hampshire (USA) as well as Nysa, Poland.

Whelen has the largest design staff in the industry and over 1,200 employees, all dedicated to producing products that people count on when lives are on the line.

Every part of every Whelen product is proudly designed and manufactured in America and is tested on-site to meet the toughest industry certifications. All Whelen products are proven in the harshest environments, to make sure everyone goes home at night.

On the road, in the air, and around the world, Whelen is trusted to be seen, trusted to be heard, trusted to perform.

Design & Engineering

The largest staff of Design Engineers in the industry! Many of our Engineers are Fire Volunteers and EMTs so they know first hand the critical need for life saving, innovative products.

Injection & Vacuum Molding

1,600 molds, 38 molding machines – from 30- to 2,000-ton capacity, 20 million parts produced yearly. Vacuum machines produce irregularly shaped components not suitable for injection molding.

WPS2900 Speaker Mold

Electronics Manufacturing

Surface mount and through-hole circuit boards are manufactured, assembled, and tested in-circuit.

Speaker and Driver Assembly


Robotic and laser cutting and drilling, Robotic Bending Cells for stand-alone operation. All machine parts are produced and maintained by automated production machine shops in New Hampshire and Connecticut

Finished Processes

The hard-coating of lenses and powder coating of housings makes them resistant to weather and abrasion. Metalizing reflectors add reflectivity and help prevent corrosion and oxidation.

Production Machine Shop

State-of-the-art milling machines, CNC lathes, and screw machines make the precision parts required for our products.

Quality Control & Testing

Strict quality control is maintained throughout the manufacturing process. Certified on-site test labs facilitate product development and shorten lead times.

Cabinets being tested

Repair, Service & Training

Whelen’s goal is to get a product repaired and back to the customer within 24 hours. Authorized service facilities are located around the globe. Training is available not only at the Chester, CT, training facility, but also at sites around the country.

Repair Bench

Manufacturing Facilities

Chester, CT

Charlestown, NH