External Inputs 3 Universal Inputs (12-bit), software configurable for: 0-5 VDC 0-10 VDC 10 kΩ Thermistor Dry Contact External Outputs 4 SSR (FET) Outputs 24 VAC/DC @ 0.5 A max (internal or external powered) LCD 2-line custom segmented display with icons Buttons 2 rows of 4 capacitive touch zones, allowing up to 8 individual buttons or combined to form larger buttons Backlight RGB LED backlight for multicolor LCD and button illumination Temperature 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 @ 25°C (77°F): ± (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 Connectors Screw-type terminal connectors Wiring Class Class 2 / SELV Power 24 V AC/DC Typ. 4 VA / 1.2 W Max. 52 VA / 72 W Communications RS-485 port BACnet MS/TP (up to 76800 bps) USB Service Port Near Field Communication (NFC) Passive 2-way short range Ambient 0° to 55°C (32° to 131°F) 10 - 90% RH (non-condensing) Dimensions With SM backplate: 13.3 x 9.3 x 2.3 cm (5.3 x 3.6 x 0.9 in.) With SC (CO2) backplate: 13.3 x 9.3 x 4.3 cm (5.3 x 3.6 x 1.7 in.) Mounted Surface Profile Surface Mount (SM, SC backplates): 2.3 cm (0.9 in.) Weight 175 g (0.39 lbs) IP Rating IP20 Compliance CE FCC Class B EAC Listings UL 916 Listed