The Transformer Advantage product family offers a variety of relay styles and options. Some choices are made when the Advantage is specified and ordered. Other choices are made during installation and setup. Setpoint relays are used for control and alarm outputs. Various combinations of form B (normally closed) and form C (changeover) relays can be specified in the fourth digit of the part number. The most popular choice is 4 form C relays.  For complex control and alarm schemes, up to 11 setpoint relays can be ordered. Relay Application Note (pdf) describes setpoint relay configurations for certain special situations on the regular (not Enhanced) Advantage models.