Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of different sensing module components.
| Sensor Type | Sensitivity | Selectivity | Linearity | Response Time | Power Comp. | Size (cm) | Price |
|---|---|---|---|---|---|---|---|
| Electrochemical | Medium | Medium | High | Medium | 0.6 W | 2.0 × 4.0 | $200 |
| Semiconductor | High | Low | Low | Low | 0.5 W | 2.0 × 4.0 | $10–$35 |
| Moisture Absorbing | High | Medium | High | High | 0.5 W | 2.0 × 4.0 | $5 |
| Infrared | High | Low | Medium | High | 1.0 W | 15.0 × 10.0 | $40 |
