The eZNT is Delta Controls' fully programmable BACnet room controller within the enteliZONE family, combining precision environmental sensing with open-protocol building automation in a compact wall-mount format. BTL-listed as a BACnet Application Specific Controller (B-ASC), it serves as an intelligent zone controller for VAV, fan coil, unit ventilator, and chilled beam applications.

What sensor combinations are available on the eZNT?

The eZNT integrates a digital temperature sensor (±0.2°C accuracy) as standard. Three optional sensor packages extend its capabilities: C adds a dual-beam NDIR CO₂ sensor (0–2,000 ppm, self-calibrating); HM adds a digital humidity sensor (±3% RH) plus a PIR motion sensor with 5 m range and 100° horizontal coverage; CHM combines all three — CO₂, humidity, and motion — for demand-controlled ventilation and occupancy-based energy management within a single wall unit.

How is the eZNT programmed and configured?

The controller runs GCL+, Delta Controls' IEC 61131-3-compatible programming language supporting custom control sequences, local BACnet scheduling, trending, and alarming — all executing natively on the device. Commissioning is streamlined by passive NFC technology: technicians configure the unit on-wall or still-in-box using the Stat Configurator mobile app, without applying power. A USB service port provides a virtual COM port for direct BACnet network access during setup.

How do the eZNT hardware models differ?

The eZNT family spans four hardware variants: the eZNT-T100 provides essential zone control with one universal input; the eZNT-T304 adds three universal inputs and four binary (SSR FET) outputs for fan staging and auxiliary equipment; the eZNT-T331 replaces binary outputs with three 0–10 V analog outputs for modulating valves and dampers; and the eZNT-Wi communicates via BACnet/IP over Wi-Fi (802.11 b/g/n, 2.4 GHz) with support for up to four LINKnet expansion modules for distributed I/O.