Feature: 1. High thickness silver contact, long service life, good conductive properties, safety and high efficiency. 2. Plastic material manufacturing, lightweight, impact resistance and oxidation resistance for longer service time. 3. Modular structure, disassembly convenient, contact can replace at any time, mechanical stability. 4. Iron base material and silver contact material, durable and reliable in use. 5. Self‑locking operation structure, 22mm / 0.9in of the mounting hole diameter. Specification: Condition: 100% New Item Type: Key Lock Switch Material: Plastic Operating Voltage: 240V-3A Contact Current: Below 10A Insulation Voltage: Below 600V Installation Hole Diameter: Approx. 22mm / 0.9in Operation Structure: Self-locking Contact Form: on and off Base Material: iron Contact Material: Silver. Package List: 1 x Key Lock Switch2 x Key