Federal Signal Model 371L incandescent warning lights have a powerful sealed beam lamp that rotates 360º within a glass or polycarbonate dome. Power is delivered to the Commander's rotating lamp by a unique collector ring. The lamp itself is mounted in a pivoting yoke. This allows the lamp beam angle to be adjusted through 90 degrees from horizontal to vertical. Changing the beam angle allows the user to create unique light patterns and/or direct the light for better visibility.

The Model 371L features a 100–watt sealed beam lamp and an impact–resistant polycarbonate dome. The thinner polycarbonate dome allows more light to pass through while protecting the lamp.

The Commander is available in five colors (amber, blue, clear, green and red). The dome and ring assembly simply screws on, providing access to the interior of the light.

The new 371L base features electrostatically applied (e–coated) black epoxy paint for greater corrosion–resistance. Wiring can be routed through the pipe–mount opening in the bottom of the light or the two side knockouts can be used for side entry wiring. Installation can be surface– or 1–inch pipe–mount. Optional wall and corner mount brackets are available.

The 371L is Type 4X, IP66 rated, UL and cUL Listed and CSA Certified.