Led Light Meter, Measuring Range 0 To 40, 000 Fc; 0 To 400, 000 Lux, Resolution 0.01 Fc Or 0.1 Lux, Accuracy +/-3 Percent, Display 4000 Count Lcd, Min./Max. Memory Yes, Auto Power Off Yes, (2) Aaa Battery Type, Includes Built In Sensor With Protective Cover