| Model | 8857 |
| IR Temperature Range | -40~500℃ |
| IR Temperature Resolution | 0.1℃, 0.1! |
| IR Temperature Accuracy (which is greater) | ±2% or 2℃ at -20~200℃, others is ±3% or 3℃ |
| Temperature Range | -20~50℃ |
| Temperature Resolution | 0.1℃, 0.1! |
| Temperature Accuracy | ±0.6℃ |
| Humidity Range | 0.1%~99.9% RH |
| Humidity Resolution | 0.1% RH |
| Humidity Accuracy | ±3%RH (at 25℃. 10~90%RH, others ±5%RH) |
| Dew Pint Temperature Range | -68~49.9℃ |
| Wet Bulb Temperature Range | -21.6~49.9℃ |
| IR Repeatability | ±1℃ |
| Emissivity | 0.3~1.0 adjustable |
| D:S Ratio | 8:1 |
| LCD Size | 44 (L)*26 (W) mm |
| Operating Temperature | 0~50℃ |
| Operating RH% | Humidity <90% |
| Storage Temperature | -20~50℃ |
| Storage RH% | Humidity <90% |
| Meter Size | 70 (L)*50 (W)*175 (T)mm |
| Weight | ~140g |
| Battery | AAA * 4 PCS |
| Standard Package | Meter, Batteries, Manual, Carry Case |
| Optional Accessory | USB Cable & Software Kit |