SpeedTech LightsZ-3 9W LED Strobe Light for Police Cars, Construction Trucks, Service Vehicles, Plows, Emergency Vehicles. Surface Mount Grille Flashing Hazard Beacon Light Amber/Amber(Yellow/Yellow)

Before I start off with this review I must tell you that I'm in and of itself impressed with the packaging and care that was taken to ensure that the items came to me undamaged.These lights are extraordinary will build and have very heavy duty construction and actual glass Optics wish I was not expecting for the price. These lightheads aren't just bright they are blinding at night and Incredibly visible during the day. The TIRs I have about a 35 degrees field of view so you have to be careful of where and how you mount these to ensure you have the light output going where you want it to. I really wish I could demo some of the linear lightheads for speedtech on my YouTube channel . Regardless I plan on picking some up to finish off my rear warning on my vehicle.ProsIncredible valueVery heavy duty ConstructionReal glass OpticsBlindingly brightConsThe wire leads from the lightheads were a little bit on the short side around 12 in which I found kind of difficult to work with on some of the areas of my Crown Vic 18 or 24 inch would have been ideal.Needs better and faster flash patterns but what comes with the unit is acceptableNot really a con but before you order the TIRs you need to realize these were made for Pure punch and not for spread.If you want right angle spread you need to get the linear .Very happy with everything I've seen so far

Cost more than others but are commercial grade. Very bright.No issues after 3 years use on a Jeep as off-road / trail-light flashers.

These lights are very bright and made of high quality materials. i am using them for my off road rock lighting. the metal and water proof housing keeps them running even when submerged under water. very easy straight forwards wiring and installation. very satisfied customer will be buying more

Bright, heavy duty casing, great pattern selections. However, Alternate sync patterns on the Z-3 is limited to single flash. Something that I saw the company is going to enhance w future generations.

The media could not be loaded.  Great quality product at an excellent value. These are not the no-name junk you get for a few dollars less. Service and support is top quality. These modules are bright and vivid. Functionality limits the alternating pattern to single flash, but there are many great simultaneous patterns. I recommend going with 4 or 6 led modules for alternating applications.

These are nice and thin, and at first seem to be great value, however they take about a half second or longer to illuminate fully when power is applied, and they always perform a very dim flash sequence before they come on. No matter what pattern or if solid is programmed, they always blink briefly and fail to turn on at full bright when powered up. They can't be synced to other lights via a flasher or OEM blinkers,hazards, reverse or stop lamps because of this delay.

Easy to install, you can look up a quick YouTube video and be on your way. They are super bright and work wonderfully!

This is a nice, compact light that will work well in most situations. However, if you have multiple lights, it only has one alternating sync pattern. If you want all lights to flash simultaneously, then these are great. if you want them to alternate, you have one pattern...on...off...on...off. I still like the lights,and am returning these for the Z-4, which are dual color and don't have the above issue.