Thanks to the SecureClick snap mounting system, the E3FZ photosensor, eliminates the need for nuts and screws and can simply be clicked into place in a suitable drilled hole. The mounting system is secure even when exposed to high levels of vibration. These sensors have a space-saving short-body M18 cylindrical format and incorporate high-sensitivity LED light sources for enhanced sensing range. They are manufactured to close tolerances with minimal optical axis deviation.