ZONEFIRST

MST – Motor Switch Terminal

MT – Manual Balancing Take-Off Dampers

MZS4 – 24V 4 Zone All-In-One Zone Control Panel

OAS – Outside Air Sensor

OZD – Plug-In-Play Outlet Zone Damper

PIRR – Plug-In Replacement Relay

PIW – Plug-In Wires

PRC – Plenum Rated Cable

RDL – Round Damper Spring Return

RDM – 24V (3-wire) Modulating Damper (By-pass)

RDP – Plug-In-Play Zone Damper

RDS – 24V (2-wire) Spring Return Zone Damper

RDV – Round Damper for Ventilation

RRM – 24V (3-wire) Retro-Round Insertable Zone Damper

RRP – Plug-In-Play Retro-Round Insertable Zone Damper

RTB – Round Take-Off By-Pass Damper