Shell: ABS+PE film, waterproof, dust-proof, corrosion-resistant and destructive. Receivers, keys, buzzers, circuit boards, enclosures, and all accessories adopt multi-layer waterproof, dust-proof and no gap structure. The telephone has good stability and strong anti-interference ability, which is in line with the national standard GB/T 15279-94. The enclosure has a grounding device and is completely isolated from the internal circuit and has a certain electromagnetic shielding effect. When speaking, the voice is clear, the voice is loud, and no response whistle. Waterproof, dust-proof and easy to clean. You can save two sets of speed dial, and you can also choose to dial randomly. The high-quality telephone is super thin, light and beautiful, with wall-mounted design and no screws on the surface. It can be made into two installation modes: embedded or wall-mounted.