package includes: Head Unit, Relay Box, HDDB15 Communication Cable, PH Probe, Waterproof Temperature Probe, 2 Float Switches, 2 Float Switch Connectors, USB-TTL converter cable
I used this device to monitor temperature and control T5 lights, so the float switches and ph probe are unused..
here is a link to their website:
http://www.reefangel.com/
I ordered this one with the PWM booster (never used this function). Bought in August of 2011 so the specs for the device may have changed a bit..
$150.00