| Power Supply |
| Display or LED Ring | 24-30VDC/24VAC(1), 4.3W nominal, 5W max. |
| Interface | Color changing (red/yellow/green) LED Air Quality Ring |
| Protocol Output |
| Protocol | BACnet MS/TP or Modbus RTU |
| Connection | 3-wire RS-485, with isolated ground |
| Data Rate | 9600, 19200, 38400, 57600, 76800, 115200 (switch selectable) |
| Address Range | 0-127 |
| Relay |
| Type | Solid-state output, 1A at 30VAC/DC, N.O. |
| Polarity | NO/NC (selectable) |
| Source | CO2 setpoint, RH setpoint, Temp setpoint, TVOC setpoint, PIR motion detection, Air Quality, off (selectable) |
| CO2 |
| Type | Non-dispersive Infrared (NDIR) |
| Accuracy | ±(30ppm + 3% of reading) (400-2,000ppm), -10-50ºC, 0-85%RH±(50ppm+ 5% of reading) (2,000-5,000ppm), -10-50ºC, 0-85%RH>5,000ppm consult factory |
| Resolution | 1 ppm |
| Range | 0-2,000 PPM (Default) (Programmable up to 10,000ppm) |
| Response time | 90 seconds to 90% reading |
| Sample rate | 1s |
| Temp and Pressure Compensation | Yes, barometric pressure readable over comms |
| Relative Humidity |
| Type | Digital CMOS |
| Accuracy(2) | 2% models, +/-2% over 0 to 80%RH range |
| Resolution | 0.05%RH |
| Response time (3) | 30s |
| Sample rate | 3s |
| Operating range | 0 to 100%RH (non-condensing) |
| Operating conditions (4) | -4 to 140oF (-20 to 60° C) at RH>90%; -4 to 176oF at RH=50% |
| Temperature Transmitter |
| Type | Silicon Band-gap |
| Temperature Sensor | 10K Type 3 Thermistor |
| Nominal Accuracy | ±0.3° C (operating range) |
| Maximum Accuracy (2) | ±0.5° C (at 25° C), ±1.0° C |
| Resolution | 0.1° C |
| Response time | 30s |
| Sample rate | 3s |
| TVOC |
| Type | MOS |
| Gas | Total VOC |
| Formaldehyde CH2O Sensitivity | Responsive to Formaldehyde concentrations 50-1000 ppb |
| Range | 0-32,000 µg/m3 (Display may be programmed to show PPB) |
| Response Time | <10s |
| Accuracy (5) | ±20µg/m3 + 15% at 1 to 500µg/m3 (typical) |
| Output | 0-2,000 µg/m3 (default) programmable up to 32,000 µg/m3 |
| PMx |
| Type | Optical |
| Size Range | PM1.0, PM2.5, PM4.0, PM10.0 |
| Scale | 0-1,000 µg/m3 |
| Lower detection limit | 0.3 µm |
| Precision | ±10 µg/m3 (0-100µg/m3); ±10% (100-1,000 µg/m3) |
| Long-Term Drift | ±1.25 µg/m3 / year |
| Carbon Monoxide |
| Type | Electrochemical |
| Detection Range | 0-200 ppm |
| Accuracy | 5% of reading |
| Resolution | 1 ppm |
| Response Time | 60 seconds |
| Ambient Light |
| Type | Phototransistor |
| Scale | 0-100 fc (lm/ft2), readable over comms |
| Operating Environment |
| Temperature | 32 to 122oF (0 to 50oC) |
| Humidity | 0-95% non-condensing |
| Enclosure |
| Material | ABS Plastic |
| Dimensions | 5.67"h x 3.00"w x 1.07"d (With concealing ring: 6.35"h x 3.69"w x 1.25"d) |
| Compliance |
| Agency | CE, RoHS |
- (1) One side of transformer, secondary is connected to signal common. Dedicated transformer is recommended.
- (2) Models with PM sensor included achieve ±5% accuracy over 0 to 80%RH range and an additional temperature shift of up +0.5° C.
- (3) Time for reaching 63% of reading at 25° C and 1 m/s airflow.
- (4) Long term exposures to conditions outside normal range at high humidity may temporarily offset the RH reading (+3%RH after 60 hours).
- (5) Wiring with silicone or other high VOC insulation will affect TVOC readings.
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