123Splat:
Good luck and BE CAREFULL!!
Indeed. From what I understand, visible light laser are less dangerous because we tend to avert our eyes so exposure it limited to a fraction of a second. But we can't see IR, so damage can occur before you even know what happened.
According to repairfaq.ece.drexel.edu/sam/lasersaf.htm "A 100 mW laser diode operating on battery power can blow a hole in your retina"
Hopefully the OP is using his 150mW IR laser in controlled conditions and with protective eyewear. Waving this thing around in public to turn off TVs and such sounds like a good way to blind innocent people.