So, I bought 3 of these:
Wavelength : 808±10nm
Power Output : CW 300mW
Working Current(mA) : ≤400mA
Working Voltage(V) : 2.2V
Working Temperature ( ℃ ):-10~+40
Threshold Current (mA):≤120
Beam Divergence (deg): Θ// :17 . Θ⊥38 .
Sealed Size : TO18(5.6mm)
Life span : >10000 hours
Now Im...