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cSense CO2 + RH/T Monitor w. Relay

cSense CO2 + RH/T Monitor w. Relay

Inquiry Catalog



The cSense continuously displays carbon dioxide, temperature and relative humidity levels so you can monitor the quality of air in your home, office, or factory. Just plug it in – the cSense turns on instantly, is self-calibrating, and is designed to last for years.

In addition to monitoring levels, the cSense has both a user-configurable 80dB alarm and a relay output. The normally-open relay closes when CO2 reaches the pre-set low level to turn on a CO2 generator or similar devices.

Unlike chemical gas sensors that last for months and must be replaced, the non-dispersive infrared diffusion CO2 sensor (NDIR) in the cSense provides the following benefits:
Sensitive & accurate – information you can act on
Self-calibrating – no need to send the monitor in for re-calibration
Manual calibration important for gardening with supplemental CO2
No moving parts – nothing to break or wear out
Does not loose accuracy in heat or cold
No over-exposure or negative memory effects


CO2 Range: 0 – 9,999 ppm
CO2 Accuracy: ± 50ppm ±5% reading value
Alarm: Loud 80DB configurable buzzer
Relay (Screw terminal): 1A @ 30VDC or .5A @ 120VAC Normally Open
Temperature Range: +14 to +140F (-10 to +60C)
Temperature Accuracy: ±0.9 F (±0.6 C)
Humidity Range: 0.1% to 99.9% RH
Humidity Accuracy: ±5% RH
Power Consumption: 12VDC (±10%) >50mA)
Display: Temperature, Humidity and CO2
Data Logging capabilities while tethered to PC via RS232 interface and software
Size: 130x85x60mm
Weight: 7.05 oz (200g)

110/220 VAC Wall Adapter
User’s Manual

Optional Accessories
%RH Calibration Kit

1 year