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DX 50/100 mw






You should put 5V to it.It has a big ol' driver board to regulate current for the diode :P
 
If I was you I'd send the unit back to DX and get the 35mW module instead. I have this module and I'm not very satisfied with it - it leaks a bunch of IR and the output isn't that great. The 35mW module however has very little IR and runs at higher power levels no sweat (I usually set mine to about 75mW when I want the brightness up)
 


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