Justech 12/24V Flashing Beacon 40W 40 LED Emergency Warning Strobe Light Amber Strobe Lights 7 Flash Modes Waterproof with Magnetic Base for Truck Vehicle

For the cost this is exactly what you need for a breakdown - so buy it as a present for a loved one in the hope they never need it.Not just for nighttime and not just for motorways. Excellent range of high density strobe settings. But be warned - the base magnet is truly powerful. Try it on the base of a metal saucepan first to discover the claim that it would stay on at 70mph!

Functionality

Ordered 2 and on testing before use 1 was fine, the other did some random flashing then stopped with one section brightly lit, the other sections off.Pressing the mode switch set off the thing into the random pattern, returning to the steady, 1 section on brightly again.Holding the mode switch on resulted in a circular flash pattern but letting go went back to the random then 1 section on bright.I disassembled the light and discovered small balls of solder in various locations around the board, balls that were stuck to proper solder joints. 1 ball was bridging 2 pins on the sequence chip, the pin that connects to the mode switch and the adjacent pin.Removing that ball fixed the light.I removed the rest of the solder balls and reassembled the light, all is working well now.Out of curiosity I disassembled the fully working light and found solder balls in there too, I cleaned those out before they could pose a problem.Conclusion, reasonable for price and functionality but quality control at the manufacturing level needs to be improved.The only real downside I could see was that the lamp itself is not well sealed to the elements and rain with wind could see water ingress to the electronics area but a bit of silicon sealant will remedy that. Overall reasonable at the price point (less than £20 UK)

there are some modes with different lighting patterns. The brightness is good enough for warning purpose. Also thr magnets are really strong and it comes with a rubber suction ring that ensure the stability of the light sticking tight even with the vehicle moving. The whole product feels sturdy as well. Definitely stars no complain.

It worked for less than hour and when I opened it was burnt. Maybe it will work in 12V system. It is rated 12-24V, but clearly 24V is too much for it.

Excellent quality item and good value

Product worked great until the lens come off at 60 mph on motorway very lucky it was quiet other than that great light very easy to install

Easy to charge up. Powerful light, ideal for my partner's vehicle as he's a traffic management supervisor