When sourcing moisture-proof lights (often referred to as tri-proof lights), the most critical factor is the IP Rating (Ingress Protection). For standard damp environments, an IP65 rating is sufficient, but for areas subject to high-pressure washdowns, IP66 or IP69K is required. Additionally, prioritize IK10 impact resistance to ensure the housing can withstand mechanical stress. For the light source, ensure a luminous efficacy of at least 130-150 lm/W to optimize energy savings, and verify that the driver is flicker-free with a power factor (PF) greater than 0.95.