The Extech LT300 Light Meter datasheet details its measurement range up to 20,000 Fc/Lux, high accuracy, and features like relative and peak modes.
The Extech LT300 is a digital and analog light meter that measures illumination in foot‑candles or lux, offering a wide range up to 20,000 Fc/Lux with 0.01 resolution. It includes a precision photodiode, color‑correction filter, and cosine‑corrected measurements.
Key functions include relative mode, peak mode, MIN/MAX storage, data hold, and a large LCD with analog bargraph and backlight. The unit comes with a 9 V battery, a remote light sensor on a 12‑inch coiled cable (extendable to 24 in), protective holster, and dimensions 150 × 75 × 40 mm, weight 200 g.
| Measurement range | 20,000 Foot‑Candles or Lux |
|---|---|
| Resolution | 0.01 Fc/Lux |
| Accuracy | ±(5% reading + 0.5%FS) |
| Dimensions | 150 × 75 × 40 mm |
| Weight | 200 g |
| Power source | 9 V battery |
| Remote sensor cable length | 12 in (305 mm) expandable to 24 in (609 mm) |
| Display | Large LCD with analog bargraph and backlight |
It measures light in foot‑candles or lux.
By using the peak mode, which captures the highest reading.
±(5% reading + 0.5%FS).