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Not at all. Its a great laser. Rayfoss is mention a lot in this forum as a good dealer and was just looking for reviews of the RayFoss 150mw pen laser, to see if there was any comparisons done against the Opto one.

Cool, thanks for the help guys. :)

Hi guys, I have had this Optotronics 150mw laser for a year. Optotronics Product Details I saw this on RayFoss, and possibly buy, but don't know if its pretty much the same as the Optotronics one. http://rayfoss.com/productn.asp?ArticleID=6 On the RayFoss specs it doesn't say it has IR...

Totally agree. Lithiums for one reason or another don't work well with this laser. Just grab some rechargeables (which gives plenty brightness) and call it a day. Not to mention you won't have to worry about possible long term damage. BATTERY FACTS Can NiMH batteries be substituted for...

Well, it comes with a warning to not use lithium batteries. Trust me, 1000mAh rechargeables will give it plenty of pop. Don't worry about the duty cycle to much unless your planning on leaving you finger on the button for minutes at a time. I've been blasting mine for about 30 secs on and 3 secs...

Simple answer.........Is by all means yes. I have a 150mw pen from Optotronics and was worried about the same thing before it came. This thing is incredible, no heat issues what so ever. I thought the duty cycle would be a issue, but its not. I'm always blasting it on and can't put it down. I...

Simple answer.........Is by all means 150mw is fine for a pen. I have a 150mw pen from Optotronics and was worried about the same thing before it came. This thing is incredible, no heat issues what so ever. I thought the duty cycle would be a issue, but its not. I'm always blasting it on and...