Table 5.
Comparison of soil moisture sensors with our proposal.
| Ref. | Model | Sensitivity | Power | Size | Cost |
|---|---|---|---|---|---|
| [42] | RK520-02 Soil Moisture Sensor, Temperature Probe & EC Sensor | 0–100% | 5 VDC, 12–24 VDC | 136 × 45 mm | $58.00–$72.00 |
| [43] | S-Soil MT-02A | ±3% (0–53%) ±5% (53–100%) |
3.6–30 VDC | 149 × 45 mm | $79.00 |
| [44] | S-Temp&VWC&EC-02A | ±2% (0–50%) ±3% (50–100%) |
3.6–30 VDC | 149 × 45 mm | $99.00 |
| [45] | SenseCAP Wireless Soil Moisture & Temperature Sensor | ±2% (0–50%); ±3% (50–100%) |
3.6 V | 149 × 45 mm | $219.00 |
| [46] | Sensor YL-69 | 0–95% | 3.3–5 VCD | 60 × 30 mm | $2.65 |
| [47] | Keyes Brick Soil Moisture Sensor Module | - | 3.3–5V VDC | 63 × 22 × 8 mm | $1.34 |
| [48] | KeeYees | - | 3.3–5 VDC | 3.858 × 0.906 mm | $7.99 |
| [49] | Seeed Studio Grove—Capacitive Moisture Sensor—101020614 | - | 3.3–5 V | - | $5.95 |
| [50] | Grove—Soil Moisture Sensor | 0–95% | 3.3–5 V | 60 × 20 × 6.35 mm | $2.99 |
| [51] | Seeed Studio Moisture Sensor—101020008 | - | 3.3 V CC y 5 VDC | - | $3.99 |
| [52] | SEN0308 | 0–57% | 3.3–5.5 VDC | 175 × 30 mm | $15.51 |
| [52] | MSE020SMS | - | 3.3V–12 VDC | - | $5.80 |
| - | Our proposal | - | 9 V | 50 m × 30 m | $2.15 |