Color: PCB Board Description This compact light control module detects ambient brightness and automatically switches a connected LED circuit when light levels fall below a set threshold. It is designed for simple, lowvoltage LED applications and for use in model circuits and basic light control projects. Key benefits Automatic operation: turns LED lamp beads on in low light and keeps them off in daylight, removing the need for manual switching. Lowvoltage compatibility: operates with a 3V power supply for safe and energyefficient use. Simple integration: PCB module format is easy to connect into small electronic projects and educational kits. Clear limits and expandability: the module directly controls only LED lamp beads and cannot drive motors or other accessories. A relay module can be added to use the module as a trigger for controlling larger appliances. Main features Function: detects brightness and light intensity to switch an LED circuit on or off. Power: suitable for connection to a 3V power supply. Output capability: intended to control LED lamp beads only; not designed to power motors or other accessories. Expandability: compatible with external relay modules to create a lightactivated switch for other equipment. Form and color: PCB board style module for straightforward wiring into projects. Typical applications Night light circuits that automatically illuminate LED indicators in low light conditions. Educational electronics and DIY kits for learning about sensors and basic automatic control. Prototype or hobby projects where a lowvoltage lightactivated switch is required; use a relay module when controlling higherpower devices. Notes and limitations The module is intended only for LED lamp beads. Do not connect motors or other nonLED loads directly. To control other appliances, use an appropriate relay module driven by this light sensor output.