Auto save and retain settings: all configurations are stored automatically and retained when power is removed. Wide input voltage and broad compatibility: DC input from 5 to 36 V. Suitable for controlling motors, lights, LED strips, small pumps, and solenoid valves. Durable, fast switching performance: compared to ordinary electromagnetic relay modules, it offers a long service life with a speed and frequency switching circuit, a number of switching cycles, and no electromagnetic interference during switching. Low resistance for higher current: reduced internal resistance enables higher current capacity for more powerful operation. Use scenarios DIY robotics: drive DC motors and actuate solenoids in small robotic projects with reliable switching and minimal EMI. Home automation and lighting: control LED strips and household lights from a microcontroller or automation system. Small pumps and irrigation: operate compact pumps or solenoid valves in watering or fluid handling applications.