| Customer Reviews | 4.4 out of 5 stars 549 | 4.5 out of 5 stars 594 | 4.4 out of 5 stars 193 | 4.4 out of 5 stars 1,022 | 4.4 out of 5 stars 1,022 | 4.7 out of 5 stars 4 |
| Price | $22.50$22.50 | $33.99$33.99 | $15.99$15.99 | $9.99$9.99 | $9.99$9.99 | $14.99$14.99 |
| Size | 3.7*3.7*1.0 in | 7.9*4.9*1.2in | 3.7*3.7*1.0 in | 2.6*2.3*0.9 in | 2.6*2.3*0.9 in | 4.3*1.7*0.8 in |
| Package Included | 1*Base Unit, 3*Sensor | 1*Base Unit, 3*Sensor | 1*Base Unit, 1*Sensor | 1*Base Unit, 1*Sensor | 1*Base Unit, 1*Sensor | 1*Sensor |
| Temperature | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Humidity | ✔ | ✔ | ✔ | ✘ | ✘ | ✔ |
| Inside Tempe Range | 14.2°F - 122°F | 14.2°F - 122°F | 14.2°F - 122°F | 14.2°F - 122°F | 14.2°F - 122°F | — |
| Outside Temp Range | -50°F-158°F | -58°F-158°F | -40°F-158°F | -58°F-158°F | -58°F-158°F | -40°F-158°F |
| Humidity Range | 20%-95% | 20%-95% | 1%-99% | — | — | 1%-99% |
| Temp Accuracy | +/-1.8°F | +/-1.8°F | +/-0.5°F | +/-1°F | +/-1°F | +/-0.5°F |
| Humidity Accuracy | +/-5% | +/-5% | +/-2% | — | — | +/-2% |
| Backlight | ✔ | ✔ | ✔ | ✘ | ✘ | ✘ |
| Power Source | USB, 3 AAA Batteries | USB, 3 AA Batteries | 3 AAA Batteries | 2 AAA Batteries | 2 AAA Batteries | 2 AA Batteries |