Wireless BACnet Thermostat: eZNTW

The eZNTW is a fully programmable wireless BACnet thermostat equipped with onboard WiFi an EnOcean® wireless connectivity. Featuring a standard temperature sensor with humidity, CO2 and motion options, the eZNTW also offers a choice of backlit colors that provide additional user feedback and esthetic appeal. The eZNTW NFC technology enables installers to use NFC-enabled mobile devices to configure the thermostat.

The eZNTW delivers custom solutions specific to the needs of each market, and provides building occupants with an intuitive touch-interface to adjust their individual comfort levels.

Wireless BACnet Thermostat - Delta eZNTW


The eZNTW is designed for a wide range of sensing applications, from basic temperature monitoring, to indoor air quality and occupancy sensing.

eZNTW is well suited for installation where wiring is difficult or costly in new or retrofit projects. Wireless connectivity increases flexibility of installation, and allows motion and temperature sensors to be installed at optimal locations for best energy management results.

eZNTW is suited for multiple market applications like hotel rooms, dormitories, schools and hospitals.


  • Wifi wireless BACnet over IP connectivity
  • EnOcean wireless for zone-level control, including sensors and outputs 
  • GCL+ programmable: Button layout, display, backlit colors, EnOcean wireless control for HVAC and room peripherals like door contact, motion sensor, lighting and blinds control
  • RGB backlight with large LCD screen allows choice of colors to indicate conditions, alarms and night mode Capacitive touch zones allow custom button sizes
  • Slider to quickly adjust setpoint or tap for precise changes
  • USB Service port, software enabled or disabled. Service tool not required. 
  • Smartphone and tablet integration and setup using NFC technology
  • Fits most electrical boxes worldwide
  • 2-piece design with tamper set screw lock




2-line custom segmented display with icons

2 rows of 4 capacitive touch zones, allowing up to 8 individual buttons or combined to form larger buttons 

RGB LED backlight for multicolor LCD and button illumination

Digital Temperature Sensor
+/- 0.2° C (+/- 0.36°F)

Digital Humidity Sensor (Optional)
Accuracy +/- 3%

CO2 Sensor (Optional)
Dual Beam, Self Calibrating NDIR Detection
Range: 0-2000 ppm
Accuracy @ 77°F (25°C):
± (50ppm + 2% of value)
Temperature Dependence: 2ppm/°C
(1 ppm/ °F) typical
Pressure Dependence: 0.13% of reading per mm Hg
Stability: 20 ppm/year (typical)

Occupancy Sensor (Optional)
Passive infrared motion (PIR) sensor
Range: 5m (16.4 ft.)
Coverage: 100° Horizontal

1 10kΩ input (16 bit A/D)


24 V AC/DC

32-bit processor
Internal A/D, Flash and RAM

BACnet IP on Wifi (802.11B and G)
EnOcean (902 MHz or 868 MHz)
RS-485 port
Delta LINKnet (up to 76800 bps)
BACnet MS/TP (up to 76800 bps)

USB Service Port
Near Field Communication (NFC)
Passive 2-way short range

Screw-type terminal connectors

Wiring Class
Class 2 / SELV

32° to 131°F (0° to 55°C)
10 - 90% RH (non-condensing)

With SM backplate:
5.3 x 3.6 x 0.9 in. (13.3 x 9.3 x 2.3 cm)
With SC (CO2) backplate:
5.3 x 3.6 x 1.7 in. (13.3 x 9.3 x 4.3 cm)

Mounted Surface Profile
Surface Mount (SM, SC backplates):
0.9 in. (2.3 cm)
IP Rating