Chris deconstructs a Whelen M7

http://sirennet.com/store/product/whelen-m7-linear-super-led-lighthead Whelen M7 Linear Super-LED Lighthead The Whelen M7 Linear Super-LED Lighthead is a mid-sized member of the M Series family of lightheads. The M Series is the only Patented Linear-LED lightheads with a bold look to the future in fire, ambulance and rescue truck emergency lighting. Designed to stand-up to the harsh environments and standards of the industry while providing top of the line performance! Features: Surface mounted via two screws. Super-LEDs provide unmatched high intensity warning, low current consumption. Unique lens shape is completely illuminated with patented Linear-LED designed reflector assembly. Lens and reflector are a sealed assembly. Available with color (same as LEDs) or clear lens. Mounting screws are located outside of the sealed lens/reflector assembly eliminating water infiltration. Replaceable light engine is accessed from the rear of the lens/reflector assembly. Rear gasket ensures that the lighthead and optional flange does not touch the vehicle's surface. Updated design allows for faster and easier installation. M7 lightheads have 164 Scan-Lock flash patterns. Choose from Solid, Left/Right, Top/Bottom, In/Out, or Diagonal sequencing. Meets KKK 1822F, NFPA 1901, SAE and EC65 specifications. 82 flash patterns meet California Title XIII compliant. Hi/Low intensity function included (Violet wire). Hard coating on lens resists scratches, chemical and corrosive damage. Current Draw @ 12.8 VDC: 2.25 (Peak*), 0.9 (Average). * in steady on mode Dimensions (approximate): 3-3/8" (86mm) H x 7-5/8" (194mm) W x 1-3/8" (35mm) D. Whelen 5 Year Warranty