Optical power meter system

S210A, 3 W Thermal Head Only, Thorlabs

Spectra Range: 250nm – 10.6μm         
Input Aperture / Sensor: ¾” dia. 50mJ/cm2
Measurement Uncertainty: +/- 5%, NIST Traceable  
Optical Power Range: 20mW – 3W
Operating Temperature: 5 °C to 40 °C
Resolution: 1mW
Storage Temperature: 5 °C to 40 °C