A relay is an electrically operated switch that uses an electromagnet to control the opening and closing of contacts in a circuit. A 12V DC relay operates on a 12-volt direct current power supply, which is a common voltage for many low-voltage applications. When current passes through the relay's coil, it generates a magnetic field that pulls the armature, causing the relay’s contacts to switch. This allows the relay to control high-voltage or high-current devices using a low-voltage control signal, providing isolation and protection to the low-voltage circuits.

    Relays, including 12V DC versions, are known for their durability and reliability, making them essential components in a wide range of devices. Meishuo, a prominent name in the industry, is known for producing high-quality relays that cater to the growing demand for precision and longevity in electronic components.