1,This is a great portable instrument that measures light intensity or the optical properties. 2,It has a large LCD display for easy reading and the measure range is from 0Lux-200K Lux. 3,With this photometer, all the brightness of the visible light can be measured. 4,This meter gives you a simple to understand Lux reading corresponding to the brightness in the room. 5,High precision, high response speed, high definition color LCD display, maximum, minimum measurement, screen with lock, automatic shutdown and with ambient temperature detection. Feature: This is a great portable instrument that measures light intensity or the optical properties. It has a large LCD display for easy reading and the measure range is from 0Lux-200K Lux. With this photometer, all the brightness of the visible light can be measured. This meter gives you a simple to understand Lux reading corresponding to the brightness in the room. High precision, high response speed, high definition color LCD display, maximum, minimum measurement, screen with lock, automatic shutdown and with ambient temperature detection. If you're an electrician or in the lighting business, this is a must have to measure how much illumination certain areas of a building must have. Specification: Material: Plastic and electronic components Color: Red and Grey Measuring range: 0Lux - 200K Lux, Resolution: 0.1 Battery: 3 x 1.5V AAA battery (Not included the battery) Size: (L) x (W) x (H) 174 x 51 x 30mm or 6.85" x 2.01" x 1.18"(appr.) Package included: 1 x Photometer (Not included the battery) Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.