| RS PRO | 40000lx | 0lx | ±5 % | 0.1 lx | Silicon Photo Diode | - | 9V | Battery | - | 175g | Easy Transfer of Measuring Data to User Smart Phone | 35.6mm | 206mm | RS-92 | +40°C |
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| RS PRO | - | 0.01lx | ±3 % ± 5 Digit | - | Photodiode | 100 h | AAA | Battery | - | 320g | Accurate, Auto Power Off Function, Data Hold, Instant Response, Point Average Function | 150mm | 72mm | ILM01 | +50°C |
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| RS PRO | - | - | ±3 % ±5 Digits | 0.01 lx | - | 400 h | AAA | Battery | - | 320g | Accurate, Data Hold, Instant Response | 35mm | 72mm | ILM 1337 | +50°C |
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| RS PRO | - | 0lx | ±3% rdg ±0.5% f.s | 0.01 lx | Photodiode | 400 h | AAA | Battery | - | 320g | Accurate, Auto Power Off Function, Data Hold, Instant Response, Peak Hold Function, Relative Function | 150mm | 72mm | ILM1335 | +40°C |
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| RS PRO | 1999lx | 9.999 fL, 9.999 cd/m² | ±3 (Calibrated to Standard Incandescent Lamp (2856 K % @ +25°C or +77°F)), ±5 (Calibrated to Standard Incandescent Lamp (2856 K % @ +25°C or+77°F)) | 0.01 lx | - | 50 h | AAA | Battery | - | 345g | - | 35mm | 150mm | - | +50°C |
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| RS PRO | 400000lx | 400lx | ±3 % | 3 lx | Photodiode | - | AAA | Battery | - | 80g | - | 23mm | 133mm | IM720 | - |
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| RS PRO | 400000lx | 40lx | ±3 % | - | Silicon Photo Diode | - | 9V | Battery | - | 250g | - | 28mm | 162mm | RS-3809 | - |
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| RS PRO | 200000lx | 0.01lx | ±3 % | 0.1 lx | Photodiode | 200 h | 9V | Battery | - | 250g | Accurate, Data Hold, Instant Response | 135mm | 72mm | ILM1332A | +40°C |
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| RS PRO | - | - | ±3 (Incandescent) % | - | Photodiode | - | - | Battery | - | 250g | Manual Ranging, Manual Zero Adjustment, Max Hold | 130mm | 55mm | ILM201L | - |
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| RS PRO | - | - | - | - | - | - | - | - | - | - | Memory Recall Button, Push Button 4 Light Type Select | 180mm | 72mm | - | - |
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| RS PRO | 99990lx | 0.01 fc, 0.1 lx | ±0.02 (XY/800 lx % @ Standard Illuminant A Measured), ±3 (EV Linerarity) % | - | - | 50 h | AAA | Battery | - | 345g | - | 35mm | 150mm | - | +50°C |
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| RS PRO | 200000lx | 20lx | ±3 % | - | Photodiode | - | - | Battery | - | 250g | Data Logging, USB Interface | 38mm | 172mm | IM203 | - |
