KY-021 Magnetic Reed Switch Sensor Module

The KY-021 Magnetic Reed Switch Sensor Module is a compact, reliable sensor designed for magnetic proximity detection using a high-sensitivity reed switch. Engineered for straightforward integration, this module delivers consistent performance across a variety of electronic projects, automation systems, and security applications. Key features include: High sensitivity reed switch for accurate detection of nearby magnetic fields. Compact dimensions that allow installation in tight spaces and compact enclosures. Operating voltage up to 20V for compatibility with a wide range of circuits. Low current consumption suitable for battery-powered and energy-conscious designs. Durable construction to provide long-term, dependable operation. Compared with conventional reed switch sensors, the KY-021 module offers enhanced sensitivity and reduced size, improving adaptability for modern compact designs. Its optimized electrical characteristics yield better stability and reduced noise interference, contributing to more precise magnetic field detection in practical applications. With a focus on balanced performance—sensitivity, size, and power efficiency—the KY-021 module is well suited for developers and integrators seeking a dependable reed switch solution for automation, security systems, DIY electronics, and other control or detection implementations.