SANFIX GM1030C Digital Lux Meter ============================================================ This can split type illuminometer measure current value, maximum value, minimum value and difference value of illumination and temperature, but also hold illumination and temperature data, calculate illuminance integral and average integral averaging and record data. Features • Switch illumination unit (Lux/FC) and temperature unit (°C/°F). • Two recording modes : Automatic storage of illumination data (up to 2000 groups) and Manual storage (up to 60 groups). • Automatic range and quick response, measurement in environment with insufficient light. • Screen backlight for darkroom operation. • Auto-off after no operation for a long time (the default span is 10 mins and can be reset). ============================================================ Specification Illumination probe : Silicon Diode Illumination range : 0 – 200.000 Lux (0 – 20.000 FC), devided into four gears. Gear | Gear Range | Minimum Resolution | Accuracy X 1 gear | 0.0 – 199.9 Lux | 0.1 Lux | ±3%rdg + 5dgts X 10 gear | 20.0*10 – 199.9*10 Lux | 1 Lux | ±3%rdg + 10dgts X 100 gear | 20.0*100 – 199.9*100 Lux | 10 Lux | ±4%rdg + 10dgts X 1000 gear | 20.0*1000 – 199.9*1000 Lux | 100 Lux | ±4%rdg + 10dgts Repeatability : ±2% Refresh rate : 2 times/second Temperature probe : NTC Thermistor Temperature range : -20 - 50°C (-4 - 122°F) Temperature accuracy : ±1.0°C Battery : 3 x 1.5V AAA battery