QCZ-T5100 Network Sensors

COSYS Building Controls


Our COSYS Application and System Controls work along with our enterprise software platform OspreyFMS to provide a meaningful context.

The QCZ-T5100 network sensor offers building occupants an intuitive touch-interface to adjust individual comfort levels while tailoring to the needs of their specific market. Featuring a standard temperature sensor with humidity, CO2 and motion options, the QCZ also offers a choice of backlit colors to provide additional user feedback and esthetic appeal. The QCZ sensor’s NFC technology allows installers to use NFC-enabled mobile devices to configure theQCZ and enable enteliWEB integration.


  • RGB backlight allows choice of colors to indicate conditions, alarms and night mode

  • Large easy-to-read LCD screen. Onscreen visual feedback on button selection

  • Capacitive touch zones allow custom button sizes

  • Multiple button layout options. Simple one-touch buttons, or two-touch buttons for added functionality

  • Slider to quickly adjust setpoint or tap for precise changes

  • Fully programmable in GCL+

  • USB Service port, software enabled or disabled. Service tool not required

  • Smartphone and tablet integration and setup using NFC technology

  • Recessed mount for minimal profile or surface mount backplate options

  • Fits most electrical boxes worldwide

  • 2-piece design with tamper set screw lock


The QCZ is suitable for a wide range of sensing applications, from basic temperature monitoring, to indoor air quality and occupancy sensing. A customizable interface allows for intuitive user interaction.

An available external input allows for additional zone monitoring such as window or door contact, temperature averaging or other dry contact sensor information.

When paired with an application controller, the QCZ supports advanced control strategies such as demand control ventilation, energy savings based on occupancy and optimal user comfort.


LCD (Optional)
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

Backlight (Optional)
Optional RGB LED backlight for multicolor LCD and button illumination

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

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)

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

RS-485 port
(up to 76800 bps)

USB Service Port
Used as virtual Com port to connect the
BACnet® network to a workstation

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

Connectors Screw-type terminal connectors

Wiring Class Class 2 / SELV

24 V AC/DC
2 VA no backlight
4 VA with backlight
6 VA with backlight and CO2 sensor

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

With R (non-CO2) and SM backplate:
5.3 x 3.6 x 0.9 in. (13.3 x 9.3 x 2.3 cm)
With R (CO2) backplate: 5.3 x 3.6 x 1.7 in. (13.3 x 9.3 x 4.3 cm)

Mounted Surface Profile
Recessed (both R backplates): 0.75 in. (1.9 cm) Surface Mount (SM backplate): 0.9 in. (2.3 cm)

IP Rating

FCC Class B

UL 916

Subject to change without notice.

Support Documents