AEMC CA811 Lightmeter is a portable, easy-to-use instrument which features optical sensors that are designed to match the response of the human eye, making them ideal instruments for workspace analysis and planning. The ergonomically designed case, large display and intuitive function selection make this instrument the right choice for any application. AEMC CA811 Lightmeter - Light Meter is designed for simple one-hand operation. It provides selectable lux or foot candle units for display and features a 3 1/2 digit backlit LCD and HOLD function. AEMC CA811 Light and Lux Meter offers a MAX function.