HOLDPEAK 881D Digital Illuminance/Light Meter, 0.1-400,000 Lux, 1-40,000 FC Luxmeter Resolution0.1Lux / 0.01Fc ; Measurement speed: 2 times / second. Wide Measure Range0.1 - 400,000Lux/1 - 40,000FC,light meter suit for plants,cinema,school,station,office and other place need light testing. High Accuracy4%rdg 0.5%f.s (less 10,000 Lux;1,000 FC) / 5%rdg 10dgt (over 10,000 Lux;1,000FC) with LCD back light. MultifunctionRapid response, Auto Zeroing, Data Hold & Peak-Data hold switches, Low power consumption, Short rise and fall time,with LCD back light. Quality AssuranceHOLDPEAK provide 1 year warranty and lifetime technical support.If there is any product issues, please feel free to contact us!