Laser Point PD-50-D9-IR Photodiode recommended for Hubner, Cobolt, PowerTechnology, CNI, under 50mW

Germanium Photodiode Head (only for use in association with  4Pi  and PLUS.2 meters ). Wavelength Detection Range:800nm-1800nm- Power Detection Range 100nW to 40mW- Light Duty Stand Included.