My salesman has convinced me to go for the TT T2 with programming (about $1000 total). In addition he strongly suggests I buy the CM-232 RS Communication module and a Voltage Power Sensor and a Video Synch Power Sensor. This brings the price to $1800. $1000 is bad enough but $1800 seems insane.

So I am not interested in whether this price is fair (although opinions are welcome) but what in the world do these accessories do and why would they benefit me.

I have an Pioneer 510 HDTV, DTV satellite box, DVD, B&K AVR307, VCR. Thanks.