We are the supplier of Lens Accessories：
–IR cut off filter is used to cut off IR light.
–Band pass filter is used to pass some narrow wavelength.
–Long pass filter is used to cut off visible light.
–IR cut filter switcher, is also called “IR cut filter removable” and “IR cut filter changer holder” is used for Day Night CCTV security lens.
–5mm CS-C mount Adapter and M12-CS mount Adapter: A CS lens with a 5mm CS-C adapter to match a C mount camera; a M12 lens with a M12-CS adapter to match a CS camera.