I just purchased a Ecobee Smart thermostat and I am going to attempt to install it on my own. I am starting rough, I don't know how many stages are on the heat or the cool. The current thermostat has 9 wires.

O/w2 has orange wire connected
R has red wire
Y/y2 has yellow wire
W/w1 has white wire
C has blue wire
Dehum has pink wire
S1 has brown wire
S2 has black wire.

Any help is much appreciate!!