ULTRAFIRE IR Torch 940nm Infrared LED Flashlight, Stepless Dimming IR Light, Zoomable Infrared Light Hunting Torch for Night Vision, 501IR

It’s ok it works but should be more intensive beam.

I bought this 940, an 850 and a UV torch for messing about with my digital camera.The LED glows a very dull red, almost imperceptible. Sometimes I need to click twice for it to turn on, or maybe I should have read the instructions. Real men don't need instructions for a torch and put them straight in the bin.This seems to have a narrower cast than the 850 and not as "bright" but that could be down to the sensitivity of my modified camera. It certainly does work out in the garden at night and confirms my Sony A7RII can see 940+ once modified.This does get a little warm after a few minutes, but hey we're entering that spectrum I suppose.I had more fun with the 850 but if you specifically need a longer nm source then this certainly works. I could focus (manually) fine using this at night, but in the "good enough" zone.It's a good price - I researched building my own and the cost of a single 940 LED alone is more than this torch because it's such a niche thing. I've seen IR "ghost hunter" torches going for £70+ and they dont even have a lens or mirror to cast the light - just a bare LED wafting in the wind.I'm giving it 4 not because of a niggle, just the 850 was better for me and I've already given that 5!

Brilliant. Usedon night vision for rat control on a farm. Much better for close range stuff than when using a laser ir illuminator

Ultrafire IR Torch 940nm, works surprisingly well.Pros. Reasonably priced, adjustable beam, adjustable intensity & green power light. Came with battery holder for 3 x AAA & sleeve for standard IR torch battery (18650).Cons. If you run the torch at full power/brightness, battery life was about 1hr, found if I dialled it down, could see just as well & battery lasted much better even during use at -5/10 deg C one evening for 4/5 hrs & still work a few nights later when warmer. Green power light flashes when battery low, is a little annoying. Not sure they are real negatives / reasons not to buy.No other negative points so far.Would buy again.