Oxygen Sensor  
(0-25%), installed on DSXM & Direct Sense II Probes.

Carbon Monoxide Sensor
4 electrode A series, 400 ppm range, installed on a smart board for DirectSense II probesSmart electrochemical CO sensor, 4 pin, used for DirectSense II probes for both IAQ and Toxic exposure applications. 0.0 ppm to 400 ppm range, with 0.1ppm resolution. Accuracy of ±2% of reading ±1 ppm.

Formaldehyde Sensor
Low range (0 to 1000 ppb), installed on a smart board for DirectSense II probes Electrochemical HCHO sensor. 0 to 1000 ppb range, limit of detection (L.O.D) 10 ppb, 20%-90%RH operating range (some moisture is critical to achieve low-range HCHO performance for this sensor).

Low Range PID Sensor 
Low range PID sensor (0-40,000 ppb, A series) for VOCs, installed on a smart board for DirectSense II probes. Factory calibrated for exceptional low detection range accuracy (0 - 10,000 ppb), with good accuracy to 40,000ppb. GrayWolf recommends that PID sensors have simple user calibration performed on a regular basis to maintain exceptional accuracy.