Plastic housing: Typically made of PC (polycarbonate) or ABS engineering plastic, offering advantages such as light weight, corrosion resistance, and good insulation properties. Some high-end models utilize flame-retardant PC materials to enhance fire safety.

Metal housing: Commonly used for industrial-grade electricity meters, typically constructed from cold-rolled steel or aluminum alloy. These materials offer high strength, impact resistance, and superior heat dissipation, though they require additional anti-rust treatment.

Composite materials: Combine the advantages of both plastic and metal-such as glass fiber reinforced plastic (GFRP)-making them suitable for applications requiring high strength and weather resistance.