Features: The module employs relays control with voltages of AC250V, current of AC10A, voltages of DC30V, and current of DC10A.Utilises 8550 transistoring driver for robust drive capability; features fixed bolt holes for straightforward installation. Power lihgt(green), relays light (red) . Blue KF301 terminals blocks facilitate easier connection to control lines. User-friendly: Compact design facilitates portability and storage, offering straightforward operating with reliabled performances. Delivers a professional and comfortable experience. Compatibles multiple control industrial applications, intelligent home automation, power supplies. Specifications: Component: Circuit Board Process: Precise welding Support 3.3V and 3V input voltages| With LED light | Single channel relays module Size about 4.4x2.7cm/1.73x1.06in suitable for various development board projects Practicality: Widely used in intelligent home control, circuit experiments, automation equipment and other scenarios Package Includes: 1PC 1-way with light 3.3v 3v relays module note: Due to problem of light effects,there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurements