The packing slip is for a Centrex 2000, not eh Centrex NE (non-electric) that I ordered. BUMMER!!! Thouroughly bummed with my $2,000 purchase. I am debating whether or not to suck it up, install it (it's actually convenient since I am running the electrical now, I can run the electrical to it...) or piss and moan and return it, waiting several more weeks.