The modular and FC Bus ports on the face of the VMA are RJ-12 (6-position) modular jacks as shown in Figure 1.
The modular SA Bus port provides a connection for the Wireless Commissioning Converter (BTCVT), VAV Balancing Tool, DIS1710 Local Controller Display, WRZ78xx Series One-to-One Wireless Transmitter, and NS Series sensors. The modular FC Bus port provides a connection for the Wireless Commissioning Converter and the ZFR/ZFR Pro Wireless Router.