**Spectral range**: 320nm - 380nm
**Calibration point**: 365nm
**Illuminance range**: 1μW/cm² ~ 9999μW/cm² / 0.01mW/cm² ~ 40.00mW/cm²
**Measurement accuracy (23±5℃)**: ±4% + 1 digit
**Overrange indication**: "HI" display
**Zero adjustment**: Supported
**Auto recording**: Supported
**Sampling time**: Approximately 0.3 seconds
**Display**: **Backlit LCD & Dual display**
**Storage capacity**: 20 sets of data + 1 set of interval time
**Working temperature**: 0~50℃ (32~122℉); humidity 10~90% RH
**Battery type**: 9V (006P, IEC6F22, NEDA1604）
**Weight**: Approx. 90g
**Dimensions**: 140 × 49 × 29mm (5.51 × 1.93 × 1.14 inches)
**Standard accessories**: UV sensor probe, manual