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| Brand | Jingcheng Huatai |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Regional Classification | Domestic (China) |
| Model | HT-YL4 |
| Price | USD 780 (FOB) |
| Measurement Principle | Dual-wavelength optical absorption (650 nm & 940 nm) for SPAD-based chlorophyll estimation |
| Display | Backlit Chinese LCD (2.8″, 320×240) |
| Dimensions | 165 × 78 × 42 mm |
| Weight | 200 g |
| Power | Rechargeable 4.2 V Li-ion battery (2000 mAh) |
| Operating Temp. | –10 °C to +50 °C |
| Storage Humidity | ≤85% RH |
| Data Storage | 32 KB internal memory |
| Interface | USB 2.0 for PC data export |
| Measurement Area | 2 mm × 2 mm |
| Response Time | <3 s per reading |
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