The PRONTO-250 from Gentec-EO is a Laser Power Meter that operates from 0.8 to 20 μm. This power detector can measure lasers with an average power of up to 250 W and has a measurement accuracy of ± 3 %. It has a very large effective aperture of 19 mm to accommodate large beams and is calibrated at YAG and CO2 wavelengths. This power detector has a touch screen LCD screen which can be used to set the wavelength, brightness and screen orientation to adapt to the application. The data entered by the user is saved in the internal memory and can be accessed through PC via USB. It has a rechargeable Li-ion battery and measures 41 x 181.4 x 17 mm.