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| Product Name | SMART SENSOR AR867 Digital ThermohygroMeter | SMART SENSOR AR837 Digital ThermohygroMeter |
| Product Price | $81.00 | $112.00 |
| Details | Details | |
| Model comparison | ||
| Display method | Digital display | Digital display |
| Measurement function | Temperature&Humidity | Temperature&Humidity |
| Measurement method | Electronic Sensors Method | Electronic Sensors Method |
| Maximum temperature | ≤50℃ | ≤50℃ |
| minimum temperature | -19~0℃ | -19~0℃ |
| temperature accuracy | ±0.6℃~±1.0℃ | ±0.6℃~±1.0℃ |
| maximum humidity | 99.9% RH | 99.9% RH |
| Humidity accuracy | ≤±2%RH | ≤±2%RH |
| Parameter comparison | ||
| Temperature Range | -10~ 50℃ (indoor); -50~ 70℃ (outdoor) | -10~50℃ |
| Temperature accuracy | ±1℃（±1.8℉） | ±1.5℃ |
| Temperature resolution | 0.1℃/℉ | 0.1℃/℉ |
| Humidity Range | 20%~99%RH | 5~98%RH |
| Humidity accuracy | ±5%RH | ±3%RH(41~80%RH) ±5%RH(10%~40%RH) |
| Humidity resolution | 1% | 1% |
| Sensor position | split | split |
| unit conversion | ℃/℉ | ℃/℉ |
| power supply | 1 * 1.5V AAA battery | 9V battery |
| Dimension | 97*105*21mm | 45*32*55cm |
| weight | 126g | 159g |
