Supply Voltage: 18-28 VAC @ 5 VA, 50/60 Hz, 15 VA inrush; reverse polarity protected or 18-30 VDC @ 200 mA

Accuracy:

CO2: ±3% of reading or ±40 ppm

Humidity: 5% of reading 20% to 80% RH

Signal Output: 4-20 mA @ 600?, 0-10V

Measurement Range:

CO2: 0-2000 ppm

Humidity: 0% to 100%

Sensing Technology:

CO2: Non-dispersive IR (NDIR)

Humidity: Capacitive

Visual Indication: LED Flashes above 1000 ppm of CO2. Display Optional, four-digit LCD

Warm Up Time: <3 minutes

Relay Output: (Optional) SPST 2A @ 24 VAC (Normally Open) (20 ppm DIF)

Relay Setpoint: 1000 ppm CO2

Alarm Auditory Levels Db: 65 dB, set at 1000 ppm of CO2, Optional, 65 dB, set at 1000 ppm of CO2

Operating Temperature: 32° to 122°F (0° to 50°C)

Operating Humidity: 0% to 99% RH (noncondensing)

Dimensions:

Wall: 4.5"H x 2.8"W x 1.0"D (11.4 x 7.3 x 2.54 cm)

Duct: 4.5"H x 2.8"W x 6.9"D (11.4 x 7.3 x 17.5 cm)

Duct probe: 1.7? (4.3 cm) diameter, 6.25? (15.9 cm) long

Weight: Wall: 0.25 lb (0.11 Kg), Duct: 0.5 lb (0.23 Kg)

Warranty: 1 year