1,Sensor size: 1/4" 2,Wavelength: 650mm 3,Focal length: 2.5mm 4,F/NO: 2.5 5,Bake focal length:3.35mm In order to have good cooperation ,we will send free sample to client for testing first! We have the best Price and the best service .Quality also is excellent ! OANDE - Your Reliable Partner for optical&electronicWe offer high quality photosensitive resistance,metal photosensitive resistance, ...