| Model | 9871 |
| Wind Speed Range | 0.6~32 m/s |
| Wind Speed Accuracy | ±(2% of reading+0.2 m/s) |
| Air Temperature Range | -20~60℃ |
| Air Temperature Resolution | 0.1℃, 0.1! |
| Air Temperature Accuracy | ±0.6℃ (-20~50℃), ±1.2℃ at others |
| Air RH% Range | 0.1%~99.9%RH |
| Air RH% Resolution | 0.1%RH |
| Air RH% Accuracy | ±3%RH (at 25℃ 10~90%RH, others ±5%RH) |
| Temperature Response Time | 60 seconds (typical) |
| Air RH% Response Time | 60 seconds (typical) |
| LCD Update | Every second |
| Wet Bulb Temp. Display | -22~70.0℃ |
| Wet Bulb Temp. Resolution | 0.1℃, 0.1! |
| Air Volume Display | 0~99999 m3/minute |
| Air Volume Resolution | 0.1 (0~9999.9) or 1 (10000~99999) |
| LCD Size | 45(L) * 26(W) mm |
| Operating Temperature | 0~50℃ |
| Operating RH% | Humidity ＜80% |
| Storage Temperature | -20~50℃ |
| Storage RH% | Humidity ＜90% |
| Meter Size | 208(L) * 70(W) * 53(H) mm |
| Weight | ~370g |
| Battery | AA*4 PCS or 9V DC Adaptor |
| Optional Accessory | Replacement Vane Probe |
| Standard Package | Meter, Wind Probe, Thermo Paper, Batteries, Manual, Software Kit, Hard Carry Case |
