Features * Light sensor used the exclusive photo diode & color correction filter, spectrum meet C.I.E. standard. * Sensor cosine correction factor meet standard. * Wide range measurement both for Lux & Foot Candle units. * Four lighting type selection, Tungsten, Fluorescent, Sodium or Mercury light source. * Zero adjustment by push button. * Microprocessor circuit. * Large LCD display. * Heavy duty & compact case. * Records Maximum, Minimum and Average readings. * Data hold. * Auto power off saves battery life. * Separate Light Sensor allows user to measure the light at an optimum position.