Are solar panels waterproof?

The 100W solar panel is IP65 rated, offering dust protection by preventing ingress, and waterproof protection against water spray from any direction. Note that the external connection port is not waterproof and should be protected from water exposure. 

The 200W solar panel is IP68 rated, providing complete dust protection and waterproof protection even during prolonged underwater immersion at a specified pressure. Protect the external interface of both panels from water, especially in rain or humid conditions, to prevent damage.