The ALX-8809A data logging light meter has a USB interface with a wide measuring range up to 400,000 Lux. It has a logging capacity of 16,000 readings and is ideal for environmental monitoring, health & safety checks, and industrial applications. Measures Lux or Footcandles (FC) over 4 ranges Silicon photo diode sensor and spectral response filter Fully cosine corrected lens Sensor connected to the instrument by 1 metre cable 58mm LCD display with 41 segment bargraph and function indicators Sampling rate of 1.5 times per second Data hold, peak hold and min/max memory Memory stores 99 readings which can be displayed on the instrument Relative reading from user set value Auto zero and over range indication Auto power off after 15 minutes of no activity can be user disabled Low battery indication Second battery backs up Eprom during main battery change Data logger records over 16,000 readings with sampling rates and time set up by the user USB interface for download of readings to PC or