Custom Case of Silent Magnetic Door Lock Coil for Smart Home

Smart magnetic silent door locks are core access control hardware for smart home systems, relying on miniature electromagnetic coils to control bolt stretching, magnetic closing and intelligent unlocking. Applied in household doors, apartment security doors and hotel access control doors, smart locks require matched coils with low-noise actuation, low-voltage startup, tiny residual magnetism, ultra-thin size and wide temperature adaptability. Ordinary lock coils have uneven winding and large residual magnetism, causing locking jamming, opening noise, low-voltage startup failure and seasonal operating failure, damaging user experience and brand reputation of smart home enterprises.

Our client is a leading South China smart home brand, supplying smart locks for real estate hardcover, apartment and hotel projects. Its new silent magnetic lock project faced technical defects of original coils, including loud working noise, large residual magnetism and high failure rate under temperature change, failing real estate acceptance standards. The client needed ultra-thin lock coils with below 35db working noise, zero residual magnetism, 24V low-voltage instant startup and stable performance within -10℃~60℃ indoor environment.

Fuying Electronics adopts low-residual-magnetism iron core and equidistant dense winding technology for exclusive lock coil production. The optimized core structure realizes instant demagnetization and bolt reset after power off. Uniform winding balances electromagnetic force to eliminate collision noise, and professional insulating coating reduces wire resonance noise. We strictly control internal resistance and turns to lower startup voltage, and conduct full sampling inspection on noise, residual magnetism and size to fit automatic lock assembly lines.

Equipped with our customized coils, the smart locks realize silent smooth opening and closing, zero jamming and 100% low-voltage startup rate in all seasons, meeting high-end lock quality inspection standards. The client successfully passed real estate project acceptance and gained higher market repurchase rate. Fuying Electronics provides low-noise, energy-saving, zero-residual-magnetism customized coils for smart door locks and smart access control equipment, supporting sample trial and bulk order delivery.