Summary:

Clean the contaminated area on the product surface with a soft, dry cloth or a damp cloth.

(Do not use a detergent or cosmetic products that contain alcohol, solvents or surfactants or oil constituents as they may deform or cause damage to the product.)

Note: 
When installing the product, be careful not to allow the surface of the product to be 
stained with chemical substance.  
Some chemical solvents such as cleaner or adhesives may cause serious damage to the 
product’s surface.

When it comes to cleaning the surface of your CCTV cameras, it's essential to use gentle and non-abrasive cleaning methods to avoid damaging the equipment.

It's important to avoid using harsh chemicals, abrasive materials, or excessive moisture when cleaning the camera surface. These can potentially damage the lens coating or other sensitive components.

Before attempting any cleaning, refer to the manufacturer's guidelines or user manual specific to your CCTV camera model for any recommended cleaning procedures or precautions.

Figure 1: instructions from the camera manual