Jebao 55 watt UV Question

[jeffp1]

Does anyone know what the difference between the CW 55 and PU55 Sterilizers? Can't find anything online explaining the difference. Looking to buy one for my reef tank.

 

[landlubber]

i own a pu-36w so i was curious when i saw this and looked myself... now i'm puzzled too lol.
my best guess is that the cw series has the transformer built into the body of the sterilizer itself whereas the pu series comes with a very long power cord and with an in-line transformer.