| Specifications | MD812 | MD912 |
| Pin Quantity | 2pins | 2pins |
| Testing Ranges | 5% to 40% | 2% to 60% |
| Resolution | 1% | 1% |
| Accuracy | ±1% | ±0.5% |
| Power | one 9V battery (6F22) | one 9V battery (6F22) |
| Dimension | 130x64x32(mm) | 130x64x32(mm) |
| Weight | Approx. 130g (including battery) | approx. 130g (including battery) |
Source: https://www.meterstesters.com/products/moisture-meters/digital-moisture-md812.html