ZoneFirst ZPS Zone Plenum Sensor delivering positive dead-end lock-up to

delivering positive dead-end lock-up to protect downstream equipment

corrosion-protected steel enclosure that meets UL 1995 plenum requirements

Each kit contains the replacement spring

Always perform a triple evacuation to 500 microns as part of your standard burnout cleanup procedure

ZoneFirst ZPS Zone Plenum Sensor delivering positive dead-end lock-up toThe ZoneFirst ZPS Zone Plenum Sensor is a critical duct mounted sensor designed for accurate supply air temperature monitoring in both residential and commercial HVAC zoning systems. This plenum rated temperature sensor integrates directly with MasterZone control panels to safeguard the heat exchanger and cooling coil. By providing real time data to the panel, the ZoneFirst ZPS prevents equipment damage caused by excessive heat or freezing