The 7731 CO2/Temp/Humidity Monitor continuously displays carbon dioxide, temperature and relative humidity levels to help monitor your indoor air quality (IAQ).
This monitor is particularly useful because it not only monitors IAQ, but also provides an actionable dry contact feature to control vents or your HVAC system. The 7731 uses a NDIR CO2 sensor, includes programmable alerts and it is compatible with standard sized plate switches.
Features:
- Easily integrates into existing HVAC systems
- Equipped with a dry contact for external connections
- Large, color display with CO2 , temperature and humidity readings
- Touch keypad to review the logged 8 hour average, 24 hour average and 24 hour peak value
- NDIR (non-dispersive infrared) CO2 technology
- Programmable "traffic light" alerts indicates IAQ status
- Three brightness levels
- Buzzer function can be activated when required and a mute function is available
- Allows for manual CO2 calibration
Specifications:
- Ranges:
- CO2: 200 to 9,999 ppm
- Temperature: 32°F to 122°F (0°C to 50°C)
- Humidity: 0% to 95% RH
- Accuracy:
- CO2:
- ±40ppm ±3% reading from 400 to 2,000 ppm
- ±10% reading outside 400 to 2,000 ppm
- Temperature: ±1°F (±1°C)
- Humidity: ±5% RH from 10% to 90%, otherwise ±7% RH
- Resolution: 1 ppm CO2 | 1°F (1°C) | 1% RH
- Response Time: ＜5 mins CO2 (90% step change)
- Display: 3.0" x 1.8" (77 x 46 mm)
- IP Rating: IP30
- Buzzer: 70 dB at 10 cm distance
- Power:
- Hard Wired: 100 to 240 VAC, 50~60Hz
- USB Type-C: 1.5V or 5 VDC
- Dimensions: 3.4" x 3.4" x 2.0" (86 x 86 x 51 mm)
- Weight: 5.3 oz (150 g)
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