Removable hole cover, repeated disassembly, simple operation: separate module, manual disassembly, simple operation. IP66 protection level, waterproof and dustproof, safe to use: isolated warehouse full-enclosed protection, to the safety of family electricity. Thickened waterproof sealing strip is to use. Built-in waterproof sealing ring enhances waterproof effect. Suitable for indoor and outdoor humid environment: suitable for villas, planting bases, chemical plants, swimming pool bathrooms, construction sites, etc.