Extech LT40-NIST – Light Meter, LED w/NIST LT40- PLEASE NOTE: If not in stock: NIST calibration takes between 7-14 days once stock is available.

Extech LED Light meters are used for monitoring and optimizing environmental light levels in buildings, schools, and offices. LED lighting is being used more commonly, because they are less expensive, more energy efficient and brighter. Model LT40 measures the light intensity for white LED lights, while the LT45 measures both white and color LED lights.